.main-content
  .item.button-jittery(style="--bg-color: #f1c40f;")
    button Click Me!
    .name Subtlety
  
  .item.button-pulse(style="--bg-color: #e67e22")
    .button__wrapper
      .pulsing
      button Click Me!
    .name Dubstep
      
  .item.button-typewriter(style="--bg-color: #e74c3c")
    .button__wrapper
      button
        p Click Me!
    .name Typewriter
  
  .item.button-pressure(style="--bg-color: #9b59b6")
    button Click Me!
      marquee(scrollamount="12")
        span Your friends would do it.
        span Your mum would be proud.
        span Your partner would be so happy.
        span Your cat would love you for it.
    .name Social Pressure
  
  
  .item.button-hand(style="--bg-color: #3498db")
    button Click Me!
      .hands
    .name Handsy
  
  
  .item.button-100(style="--bg-color:#2ecc71")
    button Click Me!
      - for (var i=1; i<4; i++)
        .emoji
    .name You're 💯

  .item.button-parrot(style="--bg-color: #2c3e50")
    button Click Me!
      - for (var i=1; i<7; i++)
        .parrot
    .name Encouragement
        
  .item.button-rainbow(style="--bg-color: #ecf0f1")
    button Click Me!
      .rainbow
    .name Rainbow
    
  .item.footer(style="--bg-color: #7f8c8d")
    .explanation
      | Part of the 
      a(href="https://codepen.io/collection/XJNKLz/" target="_blank") CSS Animations collection here
      |  .

      footer
        a(href="https://twitter.com/meowlivia_" target="_blank")
          i.icon-social-twitter.icons
        a(href="https://github.com/oliviale" target="_blank")
          i.icon-social-github.icons
        a(href="https://dribbble.com/oliviale" target="_blank")
          i.icon-social-dribbble.icons
  
View Compiled
body {
  color: #fff;
  font-family: "Rubik", sans-serif;
}

.item.footer {
  flex-wrap: wrap;
  padding: 5rem;
  text-align: center;
  font-size: 18px;
  line-height: 1.7;
  grid-column: span 1;
  @media screen and (min-width:823px) and (max-width:1223px) {
    grid-column: span 2;
  }
  a {
    text-decoration: none;
    color: #fff;
    padding: 3px 0;
    border-bottom: 1px dashed;
    &:hover {
      border-bottom: 1px solid;
    }
  }
}

footer {
  margin-top: 1.5rem;
  a {
    text-decoration: none;
    display: inline-block;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: transparent;
    border: 1px dashed #fff;
    color: #fff;
    margin: 5px;
    &:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    .icons {
      margin-top: 8px;
      display: inline-block;
      font-size: 20px;
      &:before {
        position: relative;
      }
    }
  }
}

* {
  box-sizing: border-box;
  &:before,
  &:after {
    content: "";
    position: absolute;
  }
}

.main-content {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  .item {
    display: grid;
    grid-template-rows: 1fr min-content;
    align-items: center;
    justify-content: center;
    height: 50vh;
    flex-wrap: wrap;
    background: var(--bg-color);
    &:not(.footer) {
      padding-top: 1rem;
    }
  }
}

button {
  background: transparent;
  color: #fff;
  border: 3px solid #fff;
  border-radius: 50px;
  padding: 0.8rem 2rem;
  font: 24px "Margarine", sans-serif;
  outline: none;
  cursor: pointer;
  position: relative;
  transition: 0.2s ease-in-out;
  letter-spacing: 2px;
}

.name {
  width: 100%;
  text-align: center;
  padding: 0 0 3rem;
  font: 500 14px 'Rubik', sans-serif;
  letter-spacing: .5px;
  text-transform: uppercase;
  text-shadow: 0 1px 1px rgba(0,0,0,0.4);
}

.button__wrapper {
  display: inline-block;
  position: relative;
  width: 200px;
  height: 65px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.button-pulse {
  button {
    background: var(--bg-color);
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
  }
  .button__wrapper:hover .pulsing {
    &:before {
      animation: pulsing 0.2s linear infinite;
    }
    &:after {
      animation: pulsing1 0.2s linear infinite;
    }
  }
}

.pulsing {
  width: 99%;
  height: 99%;
  border-radius: 50px;
  z-index: 1;
  position: relative;

  &:before,
  &:after {
    width: 100%;
    height: 100%;
    border: inherit;
    top: 0;
    left: 0;
    z-index: 0;
    background: #fff;
    border-radius: inherit;
    animation: pulsing 2.5s linear infinite;
  }
  &:after {
    animation: pulsing1 2.5s linear infinite;
  }
}

@keyframes pulsing {
  0% {
    opacity: 1;
    transform: scaleY(1) scaleX(1);
  }
  20% {
    opacity: 0.5;
  }
  70% {
    opacity: 0.2;
    transform: scaleY(1.8) scaleX(1.4);
  }
  80% {
    opacity: 0;
    transform: scaleY(1.8) scaleX(1.4);
  }
  90% {
    opacity: 0;
    transform: scaleY(1) scaleX(1);
  }
}
@keyframes pulsing1 {
  0% {
    opacity: 1;
    transform: scaleY(1) scaleX(1);
  }
  20% {
    opacity: 0.5;
  }
  70% {
    opacity: 0.2;
    transform: scaleY(1.3) scaleX(1.15);
  }
  80% {
    opacity: 0;
    transform: scaleY(1.3) scaleX(1.15);
  }
  90% {
    opacity: 0;
    transform: scaleY(1) scaleX(1);
  }
}

.button-typewriter {
  button {
    width: 100%;
    height: 100%;
  }
  p {
    animation: typing 4s steps(12) infinite;
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
  }
  .button__wrapper:hover p {
    animation: blink 0.3s infinite;
  }
}

@keyframes typing {
  0% {
    width: 0;
  }
  50% {
    width: 100%;
  }
  55%,
  65%,
  75% {
    opacity: 1;
  }
  60%,
  70% {
    opacity: 0;
  }
  80% {
    width: 100%;
  }
  100% {
    width: 0;
  }
}

.button-parrot {
  .parrot {
    position: absolute;
    width: 60px;
    text-align: center;
    animation: blink 0.8s infinite;
    color: transparent;
    &:before {
      content: "Click Me!";
    }
    &:nth-child(1) {
      top: -30px;
      left: -40px;
      font: 12px/1 "Margarine", sans-serif;
      transform: rotate(-20deg);
      animation-duration: 0.5s;
    }
    &:nth-child(2) {
      font: 12px/1 "Margarine", sans-serif;
      right: -40px;
      top: -20px;
      transform: rotate(15deg);
      animation-duration: 0.3s;
    }
    &:nth-child(3) {
      font: 16px/1 "Margarine", sans-serif;
      top: -60px;
      left: 15px;
      transform: rotate(10deg);
      animation-duration: 1s;
    }
    &:nth-child(4) {
      font: 18px/1 "Margarine", sans-serif;
      top: -70px;
      left: 95px;
      transform: rotate(2deg);
      animation-duration: 0.7s;
    }
    &:nth-child(5) {
      font: 14px/1 "Margarine", sans-serif;
      top: 80px;
      left: 105px;
      transform: rotate(-20deg);
      animation-duration: 0.8s;
    }
    &:nth-child(6) {
      font: 12px/1 "Margarine", sans-serif;
      top: 80px;
      left: 5px;
      transform: rotate(10deg);
      animation-duration: 1.2s;
    }
  }
  button:hover .parrot:before {
    content: "Do it!";
    width: 70px;
  }
}

@keyframes blink {
  25%,
  75% {
    color: transparent;
  }
  40%,
  60% {
    color: #fff;
  }
}

.button-hand button {
  &:before {
    content: "👇";
    font-size: 60px;
    transform: scaleX(-1);
    right: 0px;
    top: -68px;
    animation: up-down 1s infinite;
  }
  .hands {
    &:before,
    &:after {
      content: "👇";
      font-size: 40px;
      opacity: 0;
      transition: 0.4s ease-in-out;
    }
    &:before {
      transform: rotate(-60deg);
      left: -45px;
      top: -10px;
    }
    &:after {
      transform: rotate(170deg);
      right: 30px;
      top: 50px;
    }
  }
  &:hover .hands {
    &:before {
      opacity: 1;
      left: -35px;
    }
    &:after {
      opacity: 1;
      top: 40px;
    }
  }
}

@keyframes up-down {
  50% {
    margin-top: -20px;
  }
}

.button-100 {
  .emoji {
    position: absolute;
    top: -45px;
    left: 0;
    width: 35px;
    height: 35px;
    overflow: hidden;
    &:before {
      content: "💯";
      display: inline-block;
      animation: give-score 2.5s infinite;
      position: relative;
      top: 0;
    }
    &:nth-child(2) {
      left: 0;
      right: 0;
      margin: auto;
      &:before {
        animation: give-score 2.5s infinite 0.2s;
      }
    }
    &:nth-child(3) {
      left: auto;
      right: 0;
      &:before {
        animation: give-score 2.5s infinite 0.4s;
      }
    }
  }
  button:hover .emoji:before {
    content: "👏";
    transition: 0.5s ease;
  }
}

@keyframes give-score {
  30%,
  80% {
    top: 0;
  }
  40%,
  70% {
    top: 50px;
  }
}

.button-pressure {
  marquee {
    position: absolute;
    width: 90%;
    top: 125%;
    left: 5%;
    font: 18px/1 "Margarine", sans-serif;
    span {
      display: inline-block;
      height: 20px;
      &:not(:last-child) {
        margin-right: 130px;
      }
    }
  }
  button:before {
    content: "OMG YAS";
    transition: 0.5s ease;
    left: 0;
    right: 0;
    margin: auto;
    top: -15px;
    font-size: 12px;
    opacity: 0;
  }
  button:hover:before {
    animation: omg-yes 1s;
  }
}

.button-rainbow button {
  animation: rainbow 3s infinite, heartbeat 0.6s infinite;
  background: #c0392b;
  .rainbow {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: -40px;
    transition: 0.5s ease;
    opacity: 0;
    transform: rotate(0);
    &:before {
      content: "🌈";
      left: 0;
    }
  }
  &:hover .rainbow {
    opacity: 1;
    animation: rotate-nonstop 0.2s infinite;
  }
  + .name {
    color: #444;
  }
}

@keyframes rotate-nonstop {
  50% {
    transform: rotate(92deg);
  }
}

@keyframes omg-yes {
  50% {
    opacity: 1;
  }
  100% {
    top: -50px;
  }
}

@keyframes rainbow {
  0% {
    background: #1abc9c;
  }
  10% {
    background: #2ecc71;
  }
  20% {
    background: #3498db;
  }
  30% {
    background: #9b59b6;
  }
  40% {
    background: #e74c3c;
  }
  50% {
    background: #e67e22;
  }
  60% {
    background: #f1c40f;
  }
  70% {
    background: #2c3e50;
  }
  80% {
    background: #9b59b6;
  }
}

.button-jittery button {
  animation: jittery 4s infinite;
  &:hover {
    animation: heartbeat 0.2s infinite;
  }
}

@keyframes jittery {
  5%,
  50% {
    transform: scale(1);
  }
  10% {
    transform: scale(0.9);
  }
  15% {
    transform: scale(1.15);
  }
  20% {
    transform: scale(1.15) rotate(-5deg);
  }
  25% {
    transform: scale(1.15) rotate(5deg);
  }
  30% {
    transform: scale(1.15) rotate(-3deg);
  }
  35% {
    transform: scale(1.15) rotate(2deg);
  }
  40% {
    transform: scale(1.15) rotate(0);
  }
}

@keyframes heartbeat {
  50% {
    transform: scale(1.1);
  }
}
View Compiled

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/simple-line-icons/2.4.1/css/simple-line-icons.min.css

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js