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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

Add External Scripts/Pens

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About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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Packages

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HTML 

              
                <div class="instructions">
  <div class="instructions__item">Use arrows to move</div><br>
  <div class="instructions__item">Hold space for rain</div><br>
</div>

<div class="post">See how it was made <a href="https://codepen.io/MarioD/post/7bc352c11f2ca67c06084fb7fb00c56e/bike-to-shool-the-process" class="post__link" target="_blank">here</a></div>

<div class="planet">
  <svg class="rotating-fog" x="0px" y="0px" viewBox="0 0 295 268.5" style="enable-background:new 0 0 295 268.5;" xml:space="preserve">
    <path class="st0" d="M295,160.5c0-19.2-10.4-36-26-45c-3.1-15.9-13.5-29.3-27.6-36.4c1-4,1.5-8.2,1.5-12.6c0-28.7-23.3-52-52-52
    	c-5.7,0-11.3,0.9-16.4,2.6C165.1,6.6,151.3,0,136,0c-19,0-35.7,10.2-44.8,25.5c-9-7.5-20.6-12-33.2-12c-28.7,0-52,23.3-52,52
    	c0,10.1,2.9,19.6,7.9,27.6C5.3,102.4,0,114.8,0,128.5c0,13.9,5.4,26.5,14.3,35.8C9,172.4,6,182.1,6,192.5c0,28.7,23.3,52,52,52
    	c2.1,0,4.2-0.1,6.2-0.4c8.4,5.9,18.7,9.4,29.8,9.4c3.9,0,7.6-0.4,11.3-1.2c9.5,10,22.9,16.2,37.7,16.2c13.7,0,26.1-5.3,35.4-13.9
    	c8.6,6.2,19.2,9.9,30.6,9.9c28.7,0,52-23.3,52-52c0-1.1,0-2.1-0.1-3.2C280.8,202,295,182.9,295,160.5z"/>
  </svg>

  <div class="path-wrapper">

    <svg class="grass-1" x="0px" y="0px" viewBox="0 0 57.8 29" style="enable-background:new 0 0 57.8 29;" xml:space="preserve">
    	<path d="M57.8,0c0,0-25,10.5-25,29H21C21,10.5,0,5,0,5c16.8,0,21.7,6.4,26.9,14.1C32.2,11.4,41,0,57.8,0z"/>
    </svg>

    <svg class="grass-2" x="0px" y="0px" viewBox="0 0 57.8 29" style="enable-background:new 0 0 57.8 29;" xml:space="preserve">
    	<path d="M57.8,0c0,0-25,10.5-25,29H21C21,10.5,0,5,0,5c16.8,0,21.7,6.4,26.9,14.1C32.2,11.4,41,0,57.8,0z"/>
    </svg>

    <svg class="grass-3" x="0px" y="0px" viewBox="0 0 57.8 29" style="enable-background:new 0 0 57.8 29;" xml:space="preserve">
    	<path d="M57.8,0c0,0-25,10.5-25,29H21C21,10.5,0,5,0,5c16.8,0,21.7,6.4,26.9,14.1C32.2,11.4,41,0,57.8,0z"/>
    </svg>

    <svg class="tree-01" x="0px" y="0px" viewBox="0 0 266.7 346.7" style="enable-background:new 0 0 266.7 346.7;" xml:space="preserve">
      <path d="M238.7,346.7l-17.3-77.3c9.3,11.3,45.3,20,45.3,20C240,272,204,206,204,206c8,5.3,31.3,6,31.3,6
        c-27.3-14-56.7-79.3-56.7-79.3c6.7,4.7,20,2.7,20,2.7c-24-12.7-47.3-72.7-47.3-72.7c11.3,8,20.7,6.7,20.7,6.7
        C148.7,51.3,133.3,0,133.3,0c0,0-15.3,51.3-38.7,69.3c0,0,9.3,1.3,20.7-6.7c0,0-23.3,60-47.3,72.7c0,0,13.3,2,20-2.7
        c0,0-29.3,65.3-56.7,79.3c0,0,23.3-0.7,31.3-6c0,0-36,66-62.7,83.3c0,0,36-8.7,45.3-20L28,346.7H238.7z"/>
    </svg>

    <svg class="tree-02" x="0px" y="0px" viewBox="0 0 266.7 346.7" style="enable-background:new 0 0 266.7 346.7;" xml:space="preserve">
      <path d="M238.7,346.7l-17.3-77.3c9.3,11.3,45.3,20,45.3,20C240,272,204,206,204,206c8,5.3,31.3,6,31.3,6
        c-27.3-14-56.7-79.3-56.7-79.3c6.7,4.7,20,2.7,20,2.7c-24-12.7-47.3-72.7-47.3-72.7c11.3,8,20.7,6.7,20.7,6.7
        C148.7,51.3,133.3,0,133.3,0c0,0-15.3,51.3-38.7,69.3c0,0,9.3,1.3,20.7-6.7c0,0-23.3,60-47.3,72.7c0,0,13.3,2,20-2.7
        c0,0-29.3,65.3-56.7,79.3c0,0,23.3-0.7,31.3-6c0,0-36,66-62.7,83.3c0,0,36-8.7,45.3-20L28,346.7H238.7z"/>
    </svg>

    <svg class="tree-03" x="0px" y="0px" viewBox="0 0 266.7 346.7" style="enable-background:new 0 0 266.7 346.7;" xml:space="preserve">
      <path d="M238.7,346.7l-17.3-77.3c9.3,11.3,45.3,20,45.3,20C240,272,204,206,204,206c8,5.3,31.3,6,31.3,6
        c-27.3-14-56.7-79.3-56.7-79.3c6.7,4.7,20,2.7,20,2.7c-24-12.7-47.3-72.7-47.3-72.7c11.3,8,20.7,6.7,20.7,6.7
        C148.7,51.3,133.3,0,133.3,0c0,0-15.3,51.3-38.7,69.3c0,0,9.3,1.3,20.7-6.7c0,0-23.3,60-47.3,72.7c0,0,13.3,2,20-2.7
        c0,0-29.3,65.3-56.7,79.3c0,0,23.3-0.7,31.3-6c0,0-36,66-62.7,83.3c0,0,36-8.7,45.3-20L28,346.7H238.7z"/>
    </svg>

    <svg class="tree-04" x="0px" y="0px" viewBox="0 0 266.7 346.7" style="enable-background:new 0 0 266.7 346.7;" xml:space="preserve">
      <path d="M238.7,346.7l-17.3-77.3c9.3,11.3,45.3,20,45.3,20C240,272,204,206,204,206c8,5.3,31.3,6,31.3,6
        c-27.3-14-56.7-79.3-56.7-79.3c6.7,4.7,20,2.7,20,2.7c-24-12.7-47.3-72.7-47.3-72.7c11.3,8,20.7,6.7,20.7,6.7
        C148.7,51.3,133.3,0,133.3,0c0,0-15.3,51.3-38.7,69.3c0,0,9.3,1.3,20.7-6.7c0,0-23.3,60-47.3,72.7c0,0,13.3,2,20-2.7
        c0,0-29.3,65.3-56.7,79.3c0,0,23.3-0.7,31.3-6c0,0-36,66-62.7,83.3c0,0,36-8.7,45.3-20L28,346.7H238.7z"/>
    </svg>

    <svg class="tree-05" x="0px" y="0px" viewBox="0 0 266.7 346.7" style="enable-background:new 0 0 266.7 346.7;" xml:space="preserve">
      <path d="M238.7,346.7l-17.3-77.3c9.3,11.3,45.3,20,45.3,20C240,272,204,206,204,206c8,5.3,31.3,6,31.3,6
        c-27.3-14-56.7-79.3-56.7-79.3c6.7,4.7,20,2.7,20,2.7c-24-12.7-47.3-72.7-47.3-72.7c11.3,8,20.7,6.7,20.7,6.7
        C148.7,51.3,133.3,0,133.3,0c0,0-15.3,51.3-38.7,69.3c0,0,9.3,1.3,20.7-6.7c0,0-23.3,60-47.3,72.7c0,0,13.3,2,20-2.7
        c0,0-29.3,65.3-56.7,79.3c0,0,23.3-0.7,31.3-6c0,0-36,66-62.7,83.3c0,0,36-8.7,45.3-20L28,346.7H238.7z"/>
    </svg>

    <svg class="mountain-1" x="0px" y="0px" viewBox="0 0 184 184" style="enable-background:new 0 0 184 184;" xml:space="preserve">
      <path d="M169.9,184H14.1C6.4,184,0,177.6,0,169.9V14.1C0,6.4,6.4,0,14.1,0h155.7c7.8,0,14.1,6.4,14.1,14.1v155.7
      	C184,177.6,177.6,184,169.9,184z"/>
    </svg>

    <svg class="mountain-2" x="0px" y="0px" viewBox="0 0 184 184" style="enable-background:new 0 0 184 184;" xml:space="preserve">
      <path d="M169.9,184H14.1C6.4,184,0,177.6,0,169.9V14.1C0,6.4,6.4,0,14.1,0h155.7c7.8,0,14.1,6.4,14.1,14.1v155.7
      	C184,177.6,177.6,184,169.9,184z"/>
    </svg>

    <svg class="mountain-4" x="0px" y="0px" viewBox="0 0 184 184" style="enable-background:new 0 0 184 184;" xml:space="preserve">
      <path d="M169.9,184H14.1C6.4,184,0,177.6,0,169.9V14.1C0,6.4,6.4,0,14.1,0h155.7c7.8,0,14.1,6.4,14.1,14.1v155.7
      	C184,177.6,177.6,184,169.9,184z"/>
    </svg>

    <svg class="mountain-5" x="0px" y="0px" viewBox="0 0 184 184" style="enable-background:new 0 0 184 184;" xml:space="preserve">
      <path d="M169.9,184H14.1C6.4,184,0,177.6,0,169.9V14.1C0,6.4,6.4,0,14.1,0h155.7c7.8,0,14.1,6.4,14.1,14.1v155.7
      	C184,177.6,177.6,184,169.9,184z"/>
    </svg>

    <svg class="rock-1" x="0px" y="0px" viewBox="0 0 221 126" style="enable-background:new 0 0 221 126;" xml:space="preserve">
      <path d="M221.2,71.5c0-23.8-19.2-43-43-43c-10.1,0-19.4,3.5-26.8,9.3c-12.3-22.1-40-37.5-72.2-37.5c-43.6,0-79,28.2-79,63l-0.3,62.3
      	h220.7L221.2,71.5z"/>
    </svg>

    <svg class="rock-2" x="0px" y="0px" viewBox="0 0 221 126" style="enable-background:new 0 0 221 126;" xml:space="preserve">
      <path d="M221.2,71.5c0-23.8-19.2-43-43-43c-10.1,0-19.4,3.5-26.8,9.3c-12.3-22.1-40-37.5-72.2-37.5c-43.6,0-79,28.2-79,63l-0.3,62.3
      	h220.7L221.2,71.5z"/>
    </svg>

    <div class="bike">
      <div id="bm">
        <div class="light"></div>
        <div class="umbrella-animation"></div>
        <div class="bike__marker"></div>
      </div>
    </div>
    <svg width="242.7" height="244.2" x="0px" y="0px" viewBox="0 0 242.7 244.2" style="enable-background:new 0 0 242.7 244.2;" xml:space="preserve">
      <path class="outline" d="M3.3,120.6c0-20.4-4.5-39.8,3.6-57.2c11.9-25.6,30.5-29.8,54.9-43.7C81.6,8.3,94.5,1.9,119,1.9
      	c20.6,0,43,7.6,60.5,15.7c20.6,9.6,38.3,14.3,51.7,32.3c16.7,22.6,6.6,40.5,6.6,70.7c0,18.7,3.2,35.6-3.7,51.8
      	c-9.6,22.7-12.2,23.2-31.8,37.6c-22.5,16.5-48.3,32.3-78.3,32.3c-22,0-44.8-11.2-63.1-20.5C34.6,208.6,20.2,208,7.2,181.6
      	C-1.7,163.5,3.3,142.2,3.3,120.6z"/>
    </svg>

    <div class="cloud-boundary">
      <div class="rain">
        <div class="rain__drops-top"></div>
        <div class="rain__drops-bottom"></div>
      </div>
      <div class="cloud-boundary__marker"></div>
      <div class="cloud">
        <svg class="cloud-svg" x="0px" y="0px" viewBox="0 0 609.5 310" style="enable-background:new 0 0 609.5 310;" xml:space="preserve">
          <path d="M549.5,201c0,0-13-90-105-77c0,0-3-115-118-115c-94,0-116,84-116,84S87.7,68.4,81.1,203.2
          	c0,0-62.9-20.8-71.6,45.8c-7,53.5,68,52,68,52l482-5c0,0,41-1.7,41-45.5C600.5,218,577.8,201,549.5,201z"/>
        </svg>
      </div>
    </div>
  </div>
</div>
!

CSS 

              
                * {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  overflow: hidden;
  background: #b5c755;
  background: radial-gradient(ellipse at center, #b5c755 0%, #8fb467 50%);
}

.post {
  position: absolute;
  bottom: 20px;
  left: 20px;
  font-family: 'Source Sans Pro', sans-serif;
  color: rgba(0, 0, 0, 0.4);
  font-size: 12px;
}

.post__link {
  color: rgba(0, 0, 0, 0.6);
}

.planet {
  width: 300px;
  height: 300px;
  border-radius: 100%;
  position: relative;
}

.path-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 50;
}

.outline {
  fill: transparent;
  stroke: #4d3034;
  fill: #82b765;
  stroke-width: 2;
  position: relative;
  z-index: 5;
}


/* ----- */
/* Cloud */
/* ----- */

.cloud-boundary {
  width: 100px;
  height: 270px;
  position: absolute;
  top: calc(-50% - 30px);
  left: 50%;
  transform: translateX(-50%);
  transform-origin: bottom center;
  z-index: -2;
  will-change: auto;
}

.cloud-boundary__marker {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1px;
  height: 1px;
}

.cloud {
  width: 100%;
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
}

.cloud-svg {
  fill: #ffffff;
}



/* ---- */
/* Rain */
/* ---- */

.rain {
  width: calc(100% - 20px);
  height: 100%;
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  overflow: hidden;
  transition: opacity 0.3s;
  opacity: 0;
}

.rain--active {
  opacity: 0.6;
}

.rain__drops-top {
  height: 100%;
  width: 100%;
  position: absolute;
  left: 0;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/49240/rain.png) 0 0 no-repeat;
  background-size: 100% 100%;
  opacity: 1;
}

.rain__drops-bottom {
  height: 100%;
  width: 100%;
  position: absolute;
  left: 0;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/49240/rain.png) 0 0 no-repeat;
  background-size: 100% 100%;
  opacity: 1;
}



/* ---- */
/* Bike */
/* ---- */

.bike {
  position: absolute;
  top: -40px;
  left: -20px;
  width: 40px;
  height: 80px;
  z-index: -2;
  transform: rotate(0);
  will-change: auto;
}

.bike__marker {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1px;
  height: 1px;
}

#bm {
  position: relative;
}

.bike svg {
  z-index: 20;
  position: relative;
  will-change: auto;
}

.umbrella-animation {
  position: absolute;
  top: -12px;
  left: calc(50% + 2px);
  transform: translateX(-50%);
  width: 100%;
  z-index: 10;
}

.light {
  position: absolute;
  top: 18px;
  left: 30px;
  width: 0;
  z-index: 10;
  height: 10px;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/49240/light.png) 0 0 no-repeat;
  background-size: 22px 10px;
  transition: width 0s 0.3s, opacity 0.3s;
  transform-origin: center left;
  opacity: 0;
}

.light--active {
  width: 22px;
  transition: width 0.2s, opacity 0s;
  opacity: 0.6;
}



/* ------- */
/* Scenery */
/* ------- */

.tree-01 {
  width: 40px;
  position: absolute;
  top: 5px;
  left: -5px;
  transform: rotate(-41deg);
  z-index: -3;
  fill: #1f6219;
}

.tree-02 {
  width: 30px;
  position: absolute;
  top: 6px;
  left: 16px;
  transform: rotate(-41deg);
  z-index: -1;
  fill: #1a5215;
}

.tree-03 {
  width: 40px;
  position: absolute;
  top: 225px;
  left: 75px;
  transform: rotate(-161deg);
  z-index: -3;
  fill: #1f6219;
}

.tree-04 {
  width: 30px;
  position: absolute;
  top: 225px;
  left: 98px;
  transform: rotate(-169deg);
  z-index: -1;
  fill: #1a5215;
}

.tree-05 {
  width: 30px;
  position: absolute;
  top: 24px;
  left: 225px;
  transform: rotate(-304deg);
  z-index: -1;
  fill: #1a5215;
}

.mountain-1 {
  fill: #97b45c;
  position: absolute;
  top: -18px;
  left: 80px;
  transform: rotate(40deg);
  width: 60px;
  z-index: -5;
}

.mountain-2 {
  fill: #97b45c;
  position: absolute;
  top: -5px;
  left: 119px;
  transform: rotate(56deg);
  width: 60px;
  z-index: -5;
}

.mountain-4 {
  fill: #97b45c;
position: absolute;
top: 156px;
left: 182px;
transform: rotate(77deg);
width: 60px;
z-index: -5;
}

.mountain-5 {
  fill: #97b45c;
  position: absolute;
  top: 180px;
  left: 159px;
  transform: rotate(10deg);
  width: 60px;
  z-index: -5;
}

.rock-1 {
  position: absolute;
top: 127px;
left: -8px;
width: 20px;
transform: rotate(-90deg);
z-index: -1;
fill: #6a6a6a;
}

.rock-2 {
  position: absolute;
  top: 199px;
  left: 198px;
  width: 20px;
  transform: rotate(-206deg);
  z-index: -1;
  fill: #6a6a6a;
}

.rotating-fog {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  fill: #fff;
  opacity: 0.05;
  width: 92%;
  height: 92%;
  animation: spin;
  animation-duration: 40s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  z-index: -10;
}

@keyframes spin {
  0% {transform: translate(-50%, -50%) rotate(360deg);}
  100% {transform: translate(-50%, -50%) rotate(0deg);}
}

.grass-1 {
  position: absolute;
  top: 100px;
  left: -4px;
  transform: rotate(-86deg);
  width: 10px;
  height: 20px;
  fill: #4d3034;
  z-index: -10;
}

.grass-2 {
  position: absolute;
  top: 209px;
  left: 46px;
  transform: rotate(-156deg);
  width: 10px;
  height: 20px;
  fill: #4d3034;
  z-index: -10;
}

.grass-3 {
  position: absolute;
  top: 109px;
  left: 235px;
  transform: rotate(-266deg);
  width: 10px;
  height: 20px;
  fill: #4d3034;
  z-index: -10;
}


/* ------------ */
/* Instructions */
/* ------------ */

.instructions {
  position: absolute;
  top: 0;
  left: 0;
  padding: 20px;
}

.instructions__item {
  font-family: 'Source Sans Pro', sans-serif;
  color: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 3px;
  padding: 4px 10px;
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
}

.instructions__item:first-child {
  margin-top: 0;
}
!

JS 

              
                const cloudBoundary = document.querySelector('.cloud-boundary');
const bike = document.querySelector('.bike');
const bmContainer = document.querySelector('#bm');
const umbrellaAnimation = document.querySelector('.umbrella-animation');
const rain = document.querySelector('.rain');
const rainDropsTop = document.querySelector('.rain__drops-top');
let rainDropsTopPosition = rain.clientHeight * -1;
const rainDropsBottom = document.querySelector('.rain__drops-bottom');
let rainDropsBottomPosition = 0;
let space;
const light = document.querySelector('.light');


// ------------------------
// Bodymovin bike animation
// ------------------------

var animation = bodymovin.loadAnimation({
  container: bmContainer,
  renderer: 'svg',
  loop: true,
  autoplay: true,
  path: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/49240/bike.json',
});

animation.setSpeed(1);

var umbrella = bodymovin.loadAnimation({
  container: umbrellaAnimation,
  renderer: 'svg',
  loop: false,
  autoplay: false,
  path: 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/49240/umbrella.json',
});

umbrella.setSpeed(2);

// ------------------------------
// Anime.js animation around path
// ------------------------------

var path = anime.path('.outline');

var motionPath = anime({
  targets: '.bike',
  translateX: path('x'),
  translateY: path('y'),
  rotate: path('angle'),
  easing: 'linear',
  duration: 15000,
  loop: true
});

// -----------------------------------------------
// Detect collision between the bike and the cloud
// -----------------------------------------------

const bikeMarker = document.querySelector('.bike__marker');
const cloudBoundaryMarker = document.querySelector('.cloud-boundary__marker');

const detectCollision = function(item1, item2) {
  return Math.sqrt((item2.left - item1.left) * (item2.left - item1.left) + (item2.top - item1.top) * (item2.top - item1.top));
};

// -------------------------------
// Keyboard controls for the cloud
// -------------------------------

let cloudBoundaryAngle = 0;
let cloudBoundaryVelocity = 0;
let left = false;
let right = false;
let lastDirection = '';

document.addEventListener('keydown', (e) => {
  if(e.keyCode === 37) {
    left = true;
    lastDirection = 'left';
  } else if (e.keyCode === 39) {
    left = true;
    lastDirection = 'right';
  } else if (e.keyCode === 32) {
    space = true;
  }
});

document.addEventListener('keyup', (e) => {
  if(e.keyCode === 37) {
    left = false;
  } else if (e.keyCode === 39) {
    left = false;
  } else if (e.keyCode === 32) {
    space = false;
  }
});



const step = function() {

  // --------------
  // Cloud movement
  // --------------

  if(left || right) {
    if (cloudBoundaryVelocity < 2) {
      cloudBoundaryVelocity += 0.2;
    }
  }

  cloudBoundary.style.transform = `translateX(-50%) rotate(${cloudBoundaryAngle}deg)`

  if(cloudBoundaryVelocity > 0) {
    if(lastDirection === 'left') {
      cloudBoundaryAngle -= cloudBoundaryVelocity;
    } else if (lastDirection === 'right') {
      cloudBoundaryAngle += cloudBoundaryVelocity;
    }

    cloudBoundaryVelocity -= 0.05;
  } else {
    cloudBoundaryVelocity = 0;
  }

  // ------------------------------------
  // Trigger animations based on distance
  // ------------------------------------

  let distanceFromCloud = detectCollision(bikeMarker.getBoundingClientRect(), cloudBoundaryMarker.getBoundingClientRect());

  if (distanceFromCloud < 60) {
    light.classList.add('light--active');
  } else {
    if (light.classList.contains('light--active')) {
      light.classList.remove('light--active');
    }
  }

  if (distanceFromCloud < 80 && space) {
    if(!bmContainer.classList.contains('active')) {
      bmContainer.classList.add('active');
      umbrella.setDirection(1);
      umbrella.play();
    }
  } else {
    if(bmContainer.classList.contains('active')) {
      bmContainer.classList.remove('active');
      umbrella.setDirection(-1);
      umbrella.play();
    }
  }

  // -------------------
  // Rain on space press
  // -------------------

  if (space) {
    if(!rain.classList.contains('rain--active')) {
      rain.classList.add('rain--active');
    }
  } else {
    if(rain.classList.contains('rain--active')) {
      rain.classList.remove('rain--active');
    }
  }

  rainDropsTop.style.top = `${rainDropsTopPosition}px`;
  rainDropsBottom.style.top = `${rainDropsBottomPosition}px`;

  rainDropsTopPosition += 3;
  rainDropsBottomPosition += 3;

  if (rainDropsTopPosition >= 0) {
    rainDropsTopPosition = rain.clientHeight * -1;
  }

  if (rainDropsBottomPosition >= rain.clientHeight) {
    rainDropsBottomPosition = 0;
  }

  window.requestAnimationFrame(step);
};

window.requestAnimationFrame(step);
!
999px

Console