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HTML

              
                <!--

Mario 3 remade with CSS animation and media queries – a remake of a demo I did a while back for a MDN Dev Derby.

Best viewed if you have your CodePen code stacked on the sides, so you can expand the main window rather than your whole browser (controlled in bottom right of CodePen or at this link).

Link to the original demo: https://hacks.mozilla.org/2012/11/the-making-of-a-hack-media-query-mario/

and also an article about how the demo was made: https://hacks.mozilla.org/2012/11/the-making-of-a-hack-media-query-mario/

----------------------------------------------

By Ashley Nolan – https://ashleynolan.co.uk/

-->

<!-- Level Select Screen -->
<div id="levelSelect">
  <div class="imgWrapper">
    <img class="levelSelect" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/level-select.png" />
    <img class="marioFlat" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/mario-flat.png" />

    <div id="textBox" class="textBox">
      <h1>World 1</h1>
      <h2 class="startText alpha">Resize codepen window to between 320 and 420 pixels width to start!</h2>
      <a href="" class="btn startBtn">Start</a>
    </div>
  </div>
</div>

<!-- Main scene -->
<div id="mainScene" class="main">

  <p class="moveText alpha">Increase codepen window size slowly</p>

  <div class="mario"></div>

  <div class="goomba enemy1 enemy-dies"></div>

  <div class="mushroom"></div>

  <div class="piranha enemy2"></div>
  <div class="fireball"></div>

  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox1" />
  <div class="qbox-sprite qbox1"></div>
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox2" />
  <div class="qbox-sprite qbox2"></div>
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox3" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox4" />
  <div class="qbox-sprite qbox4"></div>

  <div class="coin coin1"></div>
  <div class="coin coin2"></div>
  <div class="coin coin3"></div>


  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox5" />
  <div class="qbox-sprite qbox5"></div>

  <div class="goomba enemy3"></div>
  <div class="turtle enemy4"></div>

  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box-side.gif" class="qbox qbox6" />
  <div class="qbox-sprite qbox6"></div>

  <div class="racoon-leaf"></div>

  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/q-box.gif" class="qbox qbox7" />
  <div class="qbox-sprite qbox7"></div>
  <div class="coin coin4"></div>

  <div class="goomba enemy5 enemy-dies"></div>
  <div class="goomba enemy6 enemy-dies"></div>
  <div class="goomba-winged enemy7"></div>

  <div class="coin coin-full coin5"></div>
  <div class="coin coin-full coin6"></div>
  <div class="coin coin-full coin7"></div>
  <div class="coin coin-full coin8"></div>
</div>
              
            
!

CSS

              
                
/* Font stuff */
@font-face {
    font-family: 'acknowledge_tt_brkregular';
    src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/acknowtt-webfont.eot');
    src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/acknowtt-webfont.eot?#iefix') format('embedded-opentype'),
         url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/acknowtt-webfont.woff') format('woff'),
         url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/acknowtt-webfont.ttf') format('truetype'),
         url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/acknowtt-webfont.svg#acknowledge_tt_brkregular') format('svg');
    font-weight: normal;
    font-style: normal;
}

/* Some overall body styling */
html,
body,
.main {
  width: 100%;
  height: 100%;
}
body {
  overflow: hidden;
}
img {
	max-width: 100%;
}

/* Font styling */
h1,
h2 {
  margin: 0;
  font-family: inherit;
  font-weight: bold;
  color: #404040;
  text-rendering: optimizelegibility;
}
h1,
.alpha {
  color: #ffffff;
  font-size: 10px;
  line-height: 16px;
  margin-top: 2%;
  text-transform: uppercase;
  
  @media (min-width: 320px) {
    font-size: 24px;
    line-height: 20px;
    margin-top: 5%;
  }
  @media (min-width: 600px) {
	 font-size: 30px;
    line-height: 32px;
  }
}
.btn {
  display: inline-block;
  padding: 5px 10px;
  font-size: 16px;
  line-height: 24px;
  color: #404040;
  text-decoration: none;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
  background-color: #e6e6e6;
  border-radius: 4px;
  
  &:hover {
    background-color: #e6e6e6;
  }
}

#levelSelect {
  overflow: hidden;
  height: 100%;
  line-height: 0;
  background: #000;
}
.imgWrapper {
  position: relative;
  margin: 0 auto;
  text-align: center;
  max-width: 998px;
}
#levelSelect.fadeScreen {
  height: 0px;
  transition: 1000ms linear;
}
.marioFlat {
  position: absolute;
  width: 8%;
  top: 20%;
  left: 8.5%;
}
.startScreen .marioFlat {
  animation: flat-mario 1000ms 600ms linear;
  animation-fill-mode: forwards;
}
.textBox,
.moveText {
  padding: 0 2%;
  background: #9ce8f2;
  border: 4px solid #000000;
  font-family: 'acknowledge_tt_brkregular';
  letter-spacing: 1px;
  text-shadow: 2px 0 0 #000000,
    				-2px 0 0 #000000,
    				0 2px 0 #000000,
    				0 -2px 0 #000000,
              -2px -2px 0 #000000,
              2px 2px 0 #000000,
              -2px 2px 0 #000000,
              2px 2px 0 #000000,
              2px -2px 0 #000000;
}
.textBox {
  overflow: hidden;
  position: absolute;
  width: 60%;
  height: 50%;
  top: 50%;
  left: 50%;
  margin: -25% 0 0 -30%;
}
.textBox.fade {
  width: 0;
  margin: 0;
  height: 0;
  border: 0;
  transition: all 300ms linear;
}
.fade * {
  display: none;
}
.startBtn {
  border: 1px solid #000000;
  background: #ffffff;
  text-transform: uppercase;
  font-family: 'acknowledge_tt_brkregular';
  color: #000000;
  margin-top: 10%;
  font-size: 28px;
}
.moveText {
  display: none;
  position: fixed;
  right: 40px;
  top: 10px;
  padding: 10px 20px 20px;
  width: 240px;
  text-align: center;
  font-size: 24px;
  line-height: 26px;
  
  &:after {
    content: '';
    width: 0;
    position: absolute;
    right: -40px;
    top: -20px;
    border-left: 40px solid #000000;
    border-top: 75px solid transparent;
    border-bottom: 75px solid transparent;
  }
}

/* ==========================================================================
   Setting up the characteres from the sprites
   ========================================================================== */
.mario,
.goomba,
.goomba-winged,
.turtle,
.mushroom,
.piranha,
.fireball,
.qbox-sprite,
.coin,
.racoon-leaf {
  background: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/mario-sprite.png') no-repeat;
}
.main {
  position: absolute;
  width: 6000px;
  background: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/bg-level.png') no-repeat 0 bottom;
}
.mario {
  width: 50px;
  height: 58px;
  position: absolute;
  z-index: 10;
  bottom: 29px;
  left: 10px;
  transform: scalex(-1);
  background-position: 0 top;
}
.goomba {
  width: 34px;
  height: 32px;
  position: absolute;
  background-position: -2px -696px;
}
.goomba.dead {
  background-position: -46px -696px;
}
.enemy1 {
  bottom: 37px;
  left: 450px;
}
.enemy3 {
  bottom: 37px;
  left: 1200px;
}
.enemy5 {
  bottom: 74px;
  left: 1920px;
}
.enemy6 {
  bottom: 74px;
  left: 2010px;
}
.turtle {
  width: 34px;
  height: 56px;
  position: absolute;
  z-index: 10;
  background-position: -256px -703px;
}
.enemy4 {
  transform: scalex(-1);
  bottom: 109px;
  left: 1336px;
}
.goomba-winged {
  width: 42px;
  height: 38px;
  position: absolute;
  background-position: -492px -720px;
}
.enemy7 {
  bottom: 74px;
  left: 2130px;
}
.mushroom {
  width: 41px;
  height: 41px;
  position: absolute;
  bottom: 254px;
  left: 549px;
  background-position: -200px -700px;
  zoom: 1;
  filter: alpha(opacity=65);
  opacity: 0;
}
.piranha {
  width: 37px;
  height: 74px;
  position: absolute;
  background-position: -108px -690px;
}
.enemy2 {
  bottom: 146px;
  left: 829px;
}
.fireball {
  width: 18px;
  height: 20px;
  position: absolute;
  bottom: 206px;
  left: 810px;
  background-position: -164px -701px;
}
.qbox {
  position: absolute;
  z-index: 3;
}
.qbox-sprite {
  position: absolute;
  z-index: 4;
  width: 37px;
  height: 56px;
  background-position: -1px -745px;
  zoom: 1;
  filter: alpha(opacity=65);
  opacity: 0;
}
.qbox1 {
  bottom: 128px;
  left: 405px;
}
.qbox2 {
  bottom: 128px;
  left: 442px;
}
.qbox3 {
  bottom: 239px;
  left: 516px;
}
.qbox4 {
  bottom: 239px;
  left: 553px;
}
.qbox5 {
  bottom: 202px;
  left: 958px;
}
.qbox6 {
  bottom: 74px;
  left: 1491px;
}
.qbox-sprite.qbox6 {
  width: 66px;
  height: 37px;
  background-position: -2px -812px;
}
.qbox7 {
  bottom: 128px;
  left: 1622px;
}
.coin {
  position: absolute;
  z-index: 2;
  background-position: -48px -745px;
  width: 32px;
  height: 37px;
  zoom: 1;
  filter: alpha(opacity=65);
  opacity: 0;
  transform: scalex(0.25);
}
.coin-full {
  zoom: 1;
  filter: alpha(opacity=65);
  opacity: 1;
  transform: scalex(1);
}
.coin1 {
  left: 408px;
  bottom: 182px;
}
.coin2 {
  left: 440px;
  bottom: 182px;
}
.coin3 {
  left: 960px;
  bottom: 262px;
}
.coin4 {
  left: 1624px;
  bottom: 184px;
}
.coin5 {
  left: 2474px;
  bottom: 224px;
}
.coin6 {
  left: 2554px;
  bottom: 294px;
}
.coin7 {
  left: 2634px;
  bottom: 364px;
}
.coin8 {
  left: 2718px;
  bottom: 434px;
}
.racoon-leaf {
  position: absolute;
  left: 1510px;
  bottom: 78px;
  background-position: -201px -758px;
  width: 36px;
  height: 32px;
}

/* ==========================================================================
   Firing off the animations as the media queries take effect
   ========================================================================== */
@media screen and (min-width: 320px) {
  .startAnim {
    &.main {
        animation-name: stagemove-first;
        animation-duration: 10s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 1.2s;
    }
    & .coin1 {
      animation-name: coinup;
      animation-duration: 300ms;
      animation-timing-function: ease-in-out;
      animation-iteration-count: 1;
      animation-delay: 1650ms;
    }
    & .coin2 {
      animation-name: coinup;
      animation-duration: 300ms;
      animation-timing-function: ease-in-out;
      animation-iteration-count: 1;
      animation-delay: 1850ms;
    }
    & .mario {
      animation-name: mario-run-first, mario-sprite-walk, mario-jump-first, mario-sprite-jump;
      animation-duration: 1000ms, 200ms, 600ms, 600ms;
      animation-timing-function: ease-in, step-start, linear, step-end;
      animation-iteration-count: 1, 5, 1, 1;
      animation-delay: 500ms, 500ms, 1501ms, 1501ms;
    }
    & .enemy1 {
      animation-name: enemy1, goomba-dead;
      animation-duration: 1750ms, 800ms;
      animation-timing-function: ease-in-out, step-start;
      animation-iteration-count: 1, 1;
      animation-delay: 0s, 1750ms;
    }
    & .qbox1 {
      animation: qbox-up-lower 100ms 1650ms linear;
    }
    & .qbox2 {
      animation: qbox-up-lower 80ms 1950ms linear;
    }
  }
}
@media screen and (max-width: 320px), (min-width: 440px) {
  .startBtn {
    display:none;
  }
}

@media screen and (min-width: 320px) and (max-width: 440px) {
  .startText {
    display:none; //hides start text until needed
  }
}
@media screen and (min-width: 440px) {
  .startAnim{
    &.main {
        left: -180px;
        animation-name: stagemove-second;
        animation-duration: 1.8s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 0s;
      }
    & .mario {
      background-position: 0 top;
      animation-name: mario-jump-second, mario-sprite-jump-2, mario-grow;
      animation-duration: 1400ms, 1400ms, 180ms;
      animation-timing-function: linear, step-end, step-end;
      animation-iteration-count: 1, 1, 5;
      animation-delay: 0s, 0s, 1400ms;
    }
    & .mushroom {
      animation: mushroom-reveal 600ms 800ms linear;
    }
    & .qbox4 {
      animation: qbox-up-qbox4 80ms 600ms linear;
    }
  }
}
@media screen and (min-width: 540px) {
  .startAnim {
    &.main {
        left: -265px;
        animation-name: stagemove-third;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 0s;
    }
    & .mario {
      background-position: -140px -181px;
      animation-name: mario-run-second, mario-jump-third, mario-jump-qbox, mario-run-sprite-second;
      animation-duration: 400ms, 800ms, 400ms, 1700ms;
      animation-timing-function: linear, linear, linear, step-end;
      animation-iteration-count: 1, 1, 1, 1;
      animation-delay: 0s, 500ms, 1300ms, 0s;
    }
    & .qbox5 {
      animation: qbox-up-qbox5 80ms 1400ms linear;
    }
    & .coin3 {
      animation-name: coinup-two;
      animation-duration: 300ms;
      animation-timing-function: ease-in-out;
      animation-iteration-count: 1;
      animation-delay: 1400ms;
    }
    & .fireball {
      animation-name: fireball-rotate, fireball-move;
      animation-duration: 800ms, 5000ms;
      animation-timing-function: linear, linear;
      animation-iteration-count: infinite, 1;
    }
    & .piranha {
      animation-name: piranha-move;
      animation-duration: 1000ms;
      animation-timing-function: linear;
      animation-iteration-count: 1;
      animation-delay: 2000ms;
    }
  }

}
@media screen and (min-width: 640px) {
  .startAnim {
     &.main {
        left: -650px;
        animation-name: stagemove-fourth;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 0s;
      }
      & .enemy3 {
        animation-name: enemy-third;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 0s;
      }
      & .mario {
        background-position: -205px -181px;
        animation-name: mario-jump-fourth, mario-sprite-jump-fourth, mario-turtle-hit, mario-sprite-turtle-hit;
        animation-duration: 700ms, 700ms, 1s, 1s;
        animation-timing-function: linear, step-end, linear, step-end;
        animation-iteration-count: 1, 1, 1, 1;
        animation-delay: 0s, 0s, 700ms, 701ms;
      }
      & .enemy4 {
        animation-name: turtle-walk, turtle-sprite;
        animation-duration: 1.3s, 1.3s;
        animation-timing-function: linear, step-end;
        animation-iteration-count: 1, 1;
        animation-delay: 0s, 0s;
      }
  }
}
@media screen and (min-width: 760px) {
  .startAnim {
    &.main {
        left: -950px;
        animation-name: stagemove-fifth;
        animation-duration: 400ms;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 1.5s;
    }
    & .mario {
      background-position: -140px -181px;
      animation-name: mario-kick-shell, mario-sprite-kick-shell, mario-jump-fifth, mario-racoon-change, mario-sprite-jump-fifth;
      animation-duration: 100ms, 100ms, 600ms, 1s, 1.8s;
      animation-timing-function: linear, step-end, linear, linear, step-end;
      animation-iteration-count: 1, 1, 1, 1, 1;
      animation-delay: 0s, 0s, 100ms, 800ms, 100ms;
    }
    & .enemy3 {
      animation-name: enemy-third-continued;
      animation-duration: 2s;
      animation-timing-function: linear;
      animation-iteration-count: 1;
      animation-delay: 0ms;
    }
    & .enemy4 {
      background-position: -314px -704px;
      left: 1339px;
      bottom: 109px;
      animation-name: turtle-hit-qbox, turtle-rotate;
      animation-duration: 2s, 200ms;
      animation-timing-function: linear, step-end;
      animation-iteration-count: 1, infinite;
      animation-delay: 100ms, 100ms;
    }
    & .qbox6 {
      animation: qbox-hit-qbox6 80ms 500ms linear;
    }
    & .racoon-leaf {
      animation: leaf-up 200ms 500ms ease-out;
    }
  }
}
@media screen and (min-width: 840px) {
  .startAnim{
    &.main {
        left: -1050px;
        animation-name: stagemove-sixth;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-iteration-count: 1;
        animation-delay: 0s;
    }
    & .mario {
      background-position: -131px -528px;
      animation-name: mario-jump-sixth, mario-jump-seventh, mario-jump-seventh-sprite;
      animation-duration: 500ms, 2s, 2s;
      animation-timing-function: linear, linear, step-end;
      animation-iteration-count: 1, 1, 1;
      animation-delay: 0s, 500ms, 500ms;
    }
    & .qbox7 {
      animation: qbox-up-qbox7 80ms 200ms linear;
    }
    & .coin4 {
      animation-name: coinup-four;
      animation-duration: 300ms;
      animation-timing-function: ease-in-out;
      animation-iteration-count: 1;
      animation-delay: 200ms;
    }
    & .enemy5 {
      animation-name: enemy-fifth, goomba-dead;
      animation-duration: 1000ms, 800ms;
      animation-timing-function: linear, step-end;
      animation-iteration-count: 1, 1;
      animation-delay: 0s, 1000ms;
    }
    & .enemy6 {
      animation-name: enemy-sixth, goomba-dead;
      animation-duration: 1400ms, 800ms;
      animation-timing-function: linear, step-end;
      animation-iteration-count: 1, 1;
      animation-delay: 0s, 1400ms;
    }
    & .enemy7 {
      animation-name: enemy-seventh, enemy-seventh-sprite, enemy-seventh-dead;
      animation-duration: 2600ms, 2600ms, 700ms;
      animation-timing-function: linear, step-end, linear;
      animation-iteration-count: 1, 1, 1;
      animation-delay: 0s, 0s, 2500ms;
    }
  } 
}
@media screen and (min-width: 1240px) {
  .startAnim {
  	& .mario {
      background-position: -131px -528px;
      animation-name: mario-sprint, mario-sprite-sprint, mario-sprite-sprint-trans, mario-sprint2, mario-sprite-sprint2, mario-flight-sprite, mario-flight, mario-in-flight;
      animation-duration: 2s, 200ms, 400ms, 1s, 200ms, 200ms, 4s, 200ms;
      animation-timing-function: linear, step-end, step-end, linear, step-end, step-end, linear, step-end;
      animation-iteration-count: 1, 7, 1, 1, 3, 6, 1, infinite;
      animation-delay: 0s, 0s, 1200ms, 2000ms, 1600ms, 2200ms, 3000ms, 3000ms;
    }
    & .coin5 {
      animation: coin-disappear 80ms 3700ms step-end;
    }
    & .coin6 {
      animation: coin-disappear 80ms 4050ms step-end;
    }
    & .coin7 {
      animation: coin-disappear 80ms 4400ms step-end;
    }
    & .coin8 {
      animation: coin-disappear 80ms 4750ms step-end;
    }
  }
}
/* Makes sure the sprites are triggered in the right way */
.startAnim {
	&.main,
	& .mario,
	& .goomba,
	& .goomba-winged,
	& .turtle,
	& .piranha,
	& .fireball,
	& .mushroom,
	& .coin,
	& .racoon-leaf,
	& .qbox-sprite {
 	 animation-fill-mode: forwards;
  }
}

/* ==========================================================================
   The actual animation setup – theres quite a few of these
   ========================================================================== */
@keyframes flat-mario {
  0% {
    left: 8.5%;
  }
  20% {
    left: 22.5%;
    top: 20%;
  }
  35% {
    left: 22.5%;
    top: 20%;
  }
  55% {
    left: 22.5%;
    top: 1%;
  }
  100% {
    left: 22.5%;
    top: 1%;
  }
}
@keyframes stagemove-first {
  0% { left: 0; }
  4% { left: -80px; }
  8% { left: -150px; }
  10% { left: -180px; }
  100% { left: -180px; }
}
@keyframes mario-sprite-walk {
  0% { background-position: 0 top; }
  50% { background-position: -63px top; }
}
@keyframes mario-sprite-walk-large {
  0% { background-position: 0 -179px; }
  50% { background-position: -140px -179px; }
  100% { background-position: -140px -179px; }
}
@keyframes mario-sprite-jump {
  0% {
    background-position: -198px top;
  }
  30% {
    background-position: -198px top;
    transform: scalex(-1);
  }
  31% {
    background-position: -198px top;
    transform: scalex(1);
  }
  100% {
    background-position: 0 top;
    transform: scalex(-1);
  }
}
@keyframes mario-run-first {
  0% { left: 10px; }
  100% { left: 318px; }
}
@keyframes mario-jump-first {
  0% {
    bottom: 30px;
    left: 330px;
  }
  30% {
    bottom: 110px;
    left: 390px;
  }
  50% {
    bottom: 43px;
    left: 400px;
  }
  75% {
    bottom: 110px;
    left: 440px;
  }
  100% {
    bottom: 28px;
    left: 445px;
  }
}
@keyframes qbox-up-lower {
  0% {
    bottom: 128px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  50% {
    bottom: 142px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 128px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
}
@keyframes coinup {
  0% {
    bottom: 182px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  20% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  50% {
    bottom: 280px;
  }
  80% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 182px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
}
@keyframes enemy1 {
  0% { left: 500px; }
  100% { left: 410px; }
}
@keyframes goomba-dead {
  0% {
    background-position: -46px -696px;
  }
  50% {
    background-position: -46px -696px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  99% {
    background-position: -46px -696px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    background-position: -46px -696px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
}
@keyframes stagemove-second {
  0% { left: -180px; }
  50% { left: -250px; }
  60% { left: -265px; }
  100% { left: -265px; }
}
@keyframes mario-jump-second {
  0% {
    bottom: 30px;
    left: 445px;
  }
  20% {
    bottom: 171px;
    left: 520px;
  }
  30% {
    bottom: 138px;
    left: 544px;
  }
  32% {
    bottom: 138px;
    left: 544px;
  }
  47% {
    bottom: 228px;
    left: 550px;
  }
  62% {
    bottom: 138px;
    left: 550px;
  }
  64% {
    bottom: 138px;
    left: 550px;
  }
  76% {
    bottom: 233px;
    left: 580px;
  }
  80% {
    bottom: 253px;
    left: 590px;
  }
  84% {
    bottom: 273px;
    left: 585px;
  }
  90% {
    bottom: 293px;
    left: 570px;
  }
  100% {
    bottom: 293px;
    left: 570px;
  }
}
@keyframes mario-sprite-jump-2 {
  0% { background-position: -198px top; }
  30% { background-position: 0 top; }
  33% { background-position: -198px top; }
  62% { background-position: 0 top; }
  64% { background-position: -198px top; }
  100% { background-position: 0 top; }
}
@keyframes mario-grow {
  0% { background-position: 0 top; }
  33% { background-position: 0 -179px; }
  66% { background-position: 0 top; }
  100% { background-position: 0 -179px; }
}
@keyframes mushroom-reveal {
  0% {
    bottom: 254px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  18% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  71% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  72% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  100% {
    bottom: 294px;
  }
}
@keyframes qbox-up-qbox4 {
  0% {
    bottom: 239px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  50% {
    bottom: 253px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 239px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
}
@keyframes stagemove-third {
  0% { left: -265px; }
  25% { left: -360px; }
  60% { left: -500px; }
  100% { left: -650px; }
}
@keyframes mario-run-second {
  0% {
    left: 570px;
    bottom: 293px;
  }
  40% {
    left: 604px;
    bottom: 253px;
  }
  80% {
    left: 616px;
    bottom: 220px;
  }
  100% {
    left: 646px;
    bottom: 220px;
  }
}
@keyframes mario-run-sprite-second {
  0% { background-position: -140px -181px; }
  30% { background-position: -140px -181px; }
  31% { background-position: 0 -179px; }
  60% { background-position: -205px -181px; }
  80% { background-position: -74px -179px; }
  85% { background-position: -140px -181px; }
  90% { background-position: -74px -179px; }
  95% { background-position: -140px -181px; }
  100% { background-position: 0 -179px; }
}
@keyframes mario-jump-third {
  0% {
    left: 646px;
    bottom: 220px;
  }
  30% {
    left: 730px;
    bottom: 310px;
  }
  40% {
    left: 760px;
    bottom: 320px;
  }
  50% {
    left: 800px;
    bottom: 300px;
  }
  100% {
    left: 910px;
    bottom: 145px;
  }
}
@keyframes mario-jump-qbox {
  0% {
    left: 910px;
    bottom: 145px;
  }
  10% {
    left: 930px;
    bottom: 145px;
  }
  30% {
    left: 955px;
    bottom: 170px;
  }
  50% {
    left: 970px;
    bottom: 145px;
  }
  100% {
    left: 1040px;
    bottom: 145px;
  }
}
@keyframes qbox-up-qbox5 {
  0% {
    bottom: 202px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  50% {
    bottom: 216px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 202px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
}
@keyframes coinup-two {
  0% {
    bottom: 262px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  20% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  50% {
    bottom: 360px;
  }
  80% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 262px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
}
@keyframes fireball-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes fireball-move {
  0% {
    bottom: 206px;
    left: 810px;
  }
  100% {
    bottom: 550px;
    left: 0px;
  }
}
@keyframes piranha-move {
  from { height: 74px; }
  to { height: 0px; }
}
@keyframes stagemove-fourth {
  0% { left: -650px; }
  100% { left: -950px; }
}
@keyframes enemy-third {
  from { left: 1200px; }
  to { left: 1100px; }
}
@keyframes mario-jump-fourth {
  0% {
    left: 1040px;
    bottom: 145px;
  }
  65% {
    left: 1175px;
    bottom: 304px;
  }
  80% {
    left: 1215px;
    bottom: 324px;
  }
  85% {
    left: 1225px;
    bottom: 316px;
  }
  100% {
    left: 1255px;
    bottom: 292px;
  }
}
@keyframes mario-sprite-jump-fourth {
  0% { background-position: -205px -181px; }
  80% { background-position: -140px -181px; }
  100% { background-position: -140px -181px; }
}
@keyframes mario-turtle-hit {
  0% {
    left: 1255px;
    bottom: 292px;
  }
  20% {
    left: 1296px;
    bottom: 292px;
  }
  40% {
    left: 1342px;
    bottom: 212px;
  }
  50% {
    left: 1327px;
    bottom: 150px;
  }
  63% {
    left: 1306px;
    bottom: 190px;
  }
  88% {
    left: 1262px;
    bottom: 110px;
  }
  100% {
    left: 1267px;
    bottom: 110px;
  }
}
@keyframes mario-sprite-turtle-hit {
  0% { background-position: -140px -181px; }
  5% { background-position: -74px -179px; }
  10% { background-position: -140px -181px; }
  15% { background-position: -74px -179px; }
  20% { background-position: -140px -181px; }
  40% { 
	background-position: -140px -181px;
	transform: scalex(1);
  }
  54% { background-position: -205px -181px; }
  65% { background-position: -140px -181px; }
  90% { background-position: -336px -179px; }
  97% {
    background-position: -74px -179px;
    transform: scalex(-1);
  }
  100% {
    background-position: -140px -181px;
    transform: scalex(-1);
  }
}
@keyframes turtle-walk {
  0% { left: 1346px; }
  50% { left: 1376px; }
  100% { left: 1340px; }
}
@keyframes turtle-sprite {
  0% { background-position: -256px -703px; }
  60% {
    background-position: -256px -703px;
    transform: scalex(1);
  }
  94% {
    background-position: -256px -703px;
    transform: scalex(1);
  }
  95% {
    background-position: -314px -704px;
    transform: scalex(1);
  }
  100% {
    background-position: -314px -704px;
    transform: scalex(1);
  }
}
@keyframes stagemove-fifth {
  0% {
    left: -950px;
  }
  100% {
    left: -1050px;
  }
}
@keyframes mario-kick-shell {
  0% {
    left: 1267px;
    bottom: 110px;
  }
  100% {
    left: 1290px;
    bottom: 110px;
  }
}
@keyframes mario-sprite-kick-shell {
  0% { background-position: -140px -181px; }
  10% { background-position: -74px -179px; }
  20% { background-position: -140px -181px; }
  100% { background-position: -395px -179px; }
}
@keyframes mario-jump-fifth {
  0% {
    left: 1290px;
    bottom: 110px;
  }
  35% {
    left: 1360px;
    bottom: 146px;
  }
  70% {
    left: 1450px;
    bottom: 206px;
  }
  100% {
    left: 1472px;
    bottom: 186px;
  }
}
@keyframes mario-racoon-change {
  0% {
    left: 1472px;
    bottom: 186px;
  }
  50% {
    left: 1472px;
    bottom: 186px;
  }
  75% {
    left: 1532px;
    bottom: 130px;
  }
  100% {
    left: 1566px;
    bottom: 72px;
  }
}
@keyframes mario-sprite-jump-fifth {
  0% { background-position: -395px -179px; }
  5% { background-position: -205px -181px; }
  25% { background-position: -140px -181px; }
  35% { background-position: -604px -266px; }
  45% { background-position: -663px -266px; }
  60% { background-position: -733px -266px; }
  70% { background-position: -131px -528px; }
  100% { background-position: -131px -528px; }
}
@keyframes turtle-rotate {
  0% { background-position: -314px -704px; }
  33% { background-position: -375px -704px; }
  66% { background-position: -431px -704px; }
  100% { background-position: -431px -704px; }
}
@keyframes turtle-hit-qbox {
  0% {
    left: 1340px;
    bottom: 109px;
  }
  10% {
    left: 1390px;
    bottom: 109px;
  }
  20% {
    left: 1483px;
    bottom: 72px;
  }
  35% {
    left: 1400px;
    bottom: 72px;
  }
  50% {
    left: 1310px;
    bottom: 36px;
  }
  100% {
    left: 1060px;
    bottom: 36px;
  }
}
@keyframes enemy-third-continued {
  from { left: 1100px; }
  to { left: 980px; }
}
@keyframes qbox-hit-qbox6 {
  0% {
    left: 1491px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  50% {
    left: 1507px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    left: 1491px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
}
@keyframes leaf-up {
  0% {
    bottom: 78px;
  }
  99% {
    bottom: 178px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 178px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
}
@keyframes stagemove-sixth {
  0% { left: -1050px; }
  100% { left: -1350px; }
}
@keyframes mario-jump-sixth {
  0% {
    left: 1566px;
    bottom: 72px;
  }
  10% {
    left: 1576px;
    bottom: 72px;
  }
  40% {
    left: 1610px;
    bottom: 90px;
  }
  70% {
    left: 1640px;
    bottom: 72px;
  }
  100% {
    left: 1680px;
    bottom: 72px;
  }
}
@keyframes mario-jump-seventh {
  0% {
    left: 1680px;
    bottom: 72px;
  }
  15% {
    left: 1790px;
    bottom: 172px;
  }
  25% {
    left: 1840px;
    bottom: 100px;
  }
  34% {
    left: 1890px;
    bottom: 160px;
  }
  45% {
    left: 1930px;
    bottom: 100px;
  }
  60% {
    left: 2030px;
    bottom: 230px;
  }
  70% {
    left: 2080px;
    bottom: 180px;
  }
  80% {
    left: 2100px;
    bottom: 210px;
  }
  100% {
    left: 2088px;
    bottom: 72px;
  }
}
@keyframes mario-jump-seventh-sprite {
  0% { background-position: -196px -528px; }
  15% { background-position: -131px -528px; }
  25% { background-position: -196px -528px; }
  34% { background-position: -131px -528px; }
  45% { background-position: -196px -528px; }
  60% { background-position: -131px -528px; }
  80% {
    background-position: -131px -528px;
    transform: scalex(1);
  }
  96% {
    background-position: -264px -539px;
    transform: scalex(-1);
  }
  97% {
    background-position: -917px -615px;
    transform: scalex(-1);
  }
  100% {
    background-position: -131px -528px;
    transform: scalex(1);
  }
}
@keyframes qbox-up-qbox7 {
  0% {
    bottom: 128px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  50% {
    bottom: 142px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 128px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
}
@keyframes coinup-four {
  0% {
    bottom: 184px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
  20% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  50% {
    bottom: 282px;
  }
  80% {
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 1;
  }
  100% {
    bottom: 184px;
    zoom: 1;
    filter: alpha(opacity=65);
    opacity: 0;
  }
}
@keyframes enemy-fifth {
  0% { left: 1920px; }
  100% { left: 1860px; }
}
@keyframes enemy-sixth {
  0% { left: 2010px; }
  100% { left: 1940px; }
}
@keyframes enemy-seventh {
  0% {
    left: 2200px;
    bottom: 74px;
  }
  40% {
    left: 2130px;
    bottom: 74px;
  }
  63% {
    left: 2100px;
    bottom: 144px;
  }
  73% {
    left: 2090px;
    bottom: 144px;
  }
  80% {
    left: 2070px;
    bottom: 68px;
  }
  100% {
    left: 2060px;
    bottom: 68px;
  }
}
@keyframes enemy-seventh-sprite {
  0% { background-position: -492px -720px; }
  50% { background-position: -492px -720px; }
  70% { background-position: -2px -696px; }
  100% {
    background-position: -2px -696px;
    transform: rotate(180deg);
  }
}
@keyframes enemy-seventh-dead {
  0% {
    left: 2060px;
    bottom: 68px;
  }
  40% {
    left: 2030px;
    bottom: 178px;
  }
  100% {
    left: 2000px;
    bottom: -100px;
  }
}
@keyframes mario-sprint {
  0% {
    left: 2088px;
    bottom: 72px;
  }
  60% {
    left: 1698px;
    bottom: 72px;
  }
  65% {
    left: 1688px;
    bottom: 72px;
  }
  70% {
    left: 1708px;
    bottom: 72px;
  }
  90% {
    left: 1808px;
    bottom: 72px;
  }
  100% {
    left: 1858px;
    bottom: 72px;
  }
}
@keyframes mario-sprite-sprint {
  0% {
    background-position: -131px -528px;
    transform: scalex(1);
  }
  50% {
    background-position: -68px -528px;
    transform: scalex(1);
  }
  100% {
    background-position: -68px -528px;
    transform: scalex(1);
  }
}
@keyframes mario-sprite-sprint-trans {
  0% {
    background-position: -336px -526px;
    transform: scalex(1);
  }
  50% {
    background-position: -131px -528px;
    transform: scalex(-1);
  }
  55% {
    background-position: -68px -528px;
    transform: scalex(-1);
  }
  70% {
    background-position: -131px -528px;
    transform: scalex(-1);
  }
  85% {
    background-position: -68px -528px;
    transform: scalex(-1);
  }
  100% {
    background-position: -131px -528px;
    transform: scalex(-1);
  }
}
@keyframes mario-sprint2 {
  0% {
    left: 1858px;
    bottom: 72px;
  }
  100% {
    left: 2258px;
    bottom: 72px;
  }
}
@keyframes mario-sprite-sprint2 {
  0% {
    background-position: -131px -528px;
    transform: scalex(-1);
  }
  50% {
    background-position: -68px -528px;
    transform: scalex(-1);
  }
  100% {
    background-position: -68px -528px;
    transform: scalex(-1);
  }
}
@keyframes mario-flight-sprite {
  0% {
    background-position: -113px -615px;
    transform: scalex(-1);
  }
  50% {
    background-position: -57px -615px;
    transform: scalex(-1);
  }
  100% {
    background-position: -113px -615px;
    transform: scalex(-1);
  }
}
@keyframes mario-flight {
  0% {
    left: 2258px;
    bottom: 72px;
  }
  100% {
    left: 3258px;
    bottom: 902px;
  }
}
@keyframes mario-in-flight {
  0% {
    background-position: -720px -615px;
    transform: scalex(-1);
  }
  50% {
    background-position: -786px -615px;
    transform: scalex(-1);
  }
  100% {
    background-position: -786px -615px;
    transform: scalex(-1);
  }
}
@keyframes coin-disappear {
  0% { background-position: 1000px 10000px; }
  100% { background-position: 1000px 10000px; }
}
              
            
!

JS

              
                /*	
		This JS is pretty quick and hacky – used for triggering the sounds, and for the button interaction at the start.
*/

var startBtn = document.querySelector('.startBtn'),
	moveText = document.querySelector('.moveText'),
	marioFlat = document.querySelector('.marioFlat'),
	mario = document.querySelector('.mario'),
	coin = document.querySelectorAll('.coin'),
	qbox = document.querySelectorAll('.qbox'),
	mushroom = document.querySelector('.mushroom'),
	goombaDies = document.querySelectorAll('.enemy-dies'),
	enemy1 = document.querySelector('.enemy1'),
	enemy4 = document.querySelector('.enemy4'),
	enemy5 = document.querySelector('.enemy5'),
	enemy7 = document.querySelector('.enemy7');

//  =======================
//  === EVENT LISTENERS ===
//  =======================

//click handler for START button
	startBtn.addEventListener('click', function(event) {
		event.preventDefault();
		document.getElementById('textBox').className += ' fade';
		audioNewWorld.play();
		document.getElementById('levelSelect').className = 'startScreen';
	}, false);

//listening for our flat mario on level select to start moving
	marioFlat.addEventListener('animationstart', marioFlatSound);
	marioFlat.addEventListener('webkitAnimationStart', marioFlatSound);
		function marioFlatSound() {
			//play movement sound, delay by 200ms, then play again
			mapTravel.play();
			window.setTimeout(function () { mapTravel.currentTime = 0.01; }, 200);
		}

//listening for our flat mario on level select to start moving
	marioFlat.addEventListener('animationend', marioFlatEnd);
	marioFlat.addEventListener('webkitAnimationEnd', marioFlatEnd);
		function marioFlatEnd() {
			//play movement sound, delay by 200ms, then play again
			levelBegin.play();
			audioSelectTheme.pause();
			document.getElementById('levelSelect').className += ' fadeScreen';

			window.setTimeout(function () { audioWorldTheme.play(); }, 300);
			window.setTimeout(function () { document.getElementById('mainScene').className += ' startAnim'; }, 1000);
		}

//listening for end of the first goomba animation
	var i, enemyLength = goombaDies.length;
	for (i = 0; i < enemyLength; i++) {
		goombaDies[i].addEventListener('animationend', enemyDead);
		goombaDies[i].addEventListener('webkitAnimationEnd', enemyDead);
	}
		function enemyDead(e) {
			if (!audioStomp.paused) {
				audioStomp.currentTime = 0.01;
			} else {
				audioStomp.play();
			}
		}

	enemy4.addEventListener('animationend', playStomp);
	enemy4.addEventListener('webkitAnimationEnd', playStomp);
		function playStomp(e) {
			if (e.animationName !== 'turtle-hit-qbox') {

				if (!audioStomp.paused) {
					audioStomp.currentTime = 0.01;
				} else {
					audioStomp.play();
				}
			}
		}

	enemy4.addEventListener('animationstart', playKick);
	enemy4.addEventListener('webkitAnimationEnd', playKick);
		function playKick() {
			audioKick.play();
		}

	enemy7.addEventListener('animationstart', wingedGoomba);
	enemy7.addEventListener('webkitAnimationStart', wingedGoomba);
		function wingedGoomba(e) {
			if (e.animationName === 'enemy-seventh') {
				window.setTimeout(function () { audioStomp.currentTime = 0.01; audioStomp.play(); }, 1800);
			} else if (e.animationName === 'enemy-seventh-dead') {
				audioTailSpin.play();
			}
		}

//coin
	var i, coinLength = coin.length;
	for (i = 0; i < coinLength; i++) {
		coin[i].addEventListener('animationstart', playCoin);
		coin[i].addEventListener('webkitAnimationStart', playCoin);
	}
		function playCoin() {
			if (!audioCoin.paused) {
				audioCoin.currentTime = 0.01;
			} else {
				audioCoin.play();
			}
		}

	var i, qboxLength = qbox.length;
	for (i = 0; i < qboxLength; i++) {
		qbox[i].addEventListener('animationstart', playBump);
		qbox[i].addEventListener('webkitAnimationStart', playBump);
	}
		function playBump() {
			if (!audioBump.paused) {
				audioBump.currentTime = 0.01;
			} else {
				audioBump.play();
			}
		}

//mushroom
	mushroom.addEventListener('animationstart', function(e) { audioMushroom.play(); });
	mushroom.addEventListener('webkitAnimationStart', function(e) { audioMushroom.play(); });

//Mario listener events
	mario.addEventListener('animationstart', marioEventListener);
	mario.addEventListener('webkitAnimationStart', marioEventListener);
		function marioEventListener(e) {
			switch (e.animationName) {
				//jumps
				case 'mario-jump-first':
				case 'mario-jump-third':
				case 'mario-jump-qbox':
				case 'mario-jump-fourth':
				case 'mario-jump-fifth':
				case 'mario-jump-sixth':
					moveTextToggle('hide'); //turn sign off
					audioMarioJump.play();
					break;
				case 'mario-jump-second':
					moveTextToggle('hide'); //turn sign off
					audioMarioJump.play();
					window.setTimeout(function () { audioMarioJump.currentTime = 0.01; }, 370);
					break;
				case 'mario-grow':
					audioPowerUp.play();
					break;
				case 'mario-run-second':
				case 'mario-sprite-jump-fourth':
				case 'mario-kick-shell':
				case 'mario-jump-sixth':
				case 'mario-sprint':
					moveTextToggle('hide'); //turn sign off
					break;
				case 'mario-racoon-change':
					audioRacoon.play();
					break;
				case 'mario-flight-sprite':
					window.setTimeout(function () { audioFlight.play(); }, 400);
					break;
			}
		}
	mario.addEventListener('animationend', marioEventEndListener);
	mario.addEventListener('webkitAnimationEnd', marioEventEndListener);
		function marioEventEndListener(e) {
			switch (e.animationName) {
				//jumps
				case 'mario-jump-first':
				case 'mario-grow':
				case 'mario-jump-qbox':
				case 'mario-turtle-hit':
				case 'mario-racoon-change':
				case 'mario-jump-seventh':
					moveTextToggle('show');
					break;
			}
		}

//  =============================
//  === AUDIO BITS AND PIECES ===
//  =============================

var audio = new Audio(), //generic audio object for testing
	canPlayOgg = !!audio.canPlayType && audio.canPlayType('audio/ogg; codecs="vorbis"') !== "",
	canPlayMP3 = !!audio.canPlayType && audio.canPlayType('audio/mp3') !== "",

	//setup audio elements to embed in page,
	audioObjects = [],
	audioSelectTheme,
	audioWorldTheme,
	audioNewWorld,
	mapTravel,
	levelBegin,
	audioMarioJump,
	audioFlight,
	audioCoin,
	audioBump,
	audioStomp,
	audioKick,
	audioTailSpin,
	audioMushroom,
	audioPowerUp,
	audioRacoon;


  audioSelectTheme = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3-world-map", true);
  audioWorldTheme = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3-overworld-1", true);
  audioNewWorld = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_map_new_world");
  mapTravel = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_map_travel");
  levelBegin = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_enter_level");
  audioMarioJump = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_jump");
  audioFlight = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_pmeter");
  audioCoin = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_coin");
  audioBump = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_bump");
  audioStomp = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_stomp");
  audioKick = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_kick");
  audioTailSpin = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_tail");
  audioMushroom = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_mushroom_appears");
  audioPowerUp = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_power-up"),
  audioRacoon = createAudio("https://s3-us-west-2.amazonaws.com/s.cdpn.io/12207/smb3_raccoon_transform");

audioSelectTheme.play();

//generic function to create all new audio elements equal, with preload
function createAudio (audioFile, loopSet) {
	var tempAudio = new Audio(),
		audioExt;

	if (canPlayMP3) {
		audioExt = '.mp3';
	} else if (canPlayOgg) {
		audioExt = '.ogg';
	}

	tempAudio.setAttribute('src', audioFile + audioExt);
	tempAudio.preload = 'auto';
	tempAudio.loop = (loopSet === true ? true : false);

	return tempAudio;
}


function deleteNode(element) {
	element.style.display = 'none';
}

function moveTextToggle (state) {
	var moveTextState = moveText.style.display;

	if (moveTextState === 'block' || state === 'hide') {
		moveText.style.display = 'none';
	} else if (moveTextState !== 'block' || state === 'show') {
		moveText.style.display = 'block';
	}
}

              
            
!
999px

Console