<p>Різні значення для <code>transition-timing-function</code> у дії:</p>

<hr>

<div class="wrapper">
  <div class="block block-1">
    <span>linear</span>
  </div>
  <div class="block block-2">
    <span>ease</span>
  </div>
  <div class="block block-3">
    <span>ease-in</span>
  </div>
  <div class="block block-4">
    <span>ease-out</span>
  </div>
  <div class="block block-5">
    <span>ease-in-out</span>
  </div>
</div>

<div class="wrapper">
  <div class="block block-6">
    <span>step-end</span>
  </div>
  <div class="block block-7">
    <span>step-start</span>
  </div>
  <div class="block block-8">
    <span>steps(5, end)</span>
  </div>
  <div class="block block-9">
    <span>cubic-bezier(0.25, 0.1, 0.25, 3.0)</span>
  </div>
</div>
body {
  padding: 36px;
  text-align: center;
  font-family: monospace;
  font-size: 17px;
  color: #222;
  line-height: 1.45; 
}

#btn {
  cursor: pointer;
  width: 250px;
  text-align: center;
  padding: 6px 12px;
  font-size: 19px;
  display: inline-block;
}

.wrapper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  height: 350px;
  background-color: #eee;
  margin-bottom: 16px;
}

.block {
  background-color: red;
  padding: 26px 8px;
  width: 125px;
  margin: 2px;
  text-align: center;
  color: #fff;
  font-size: 15px;
  border: 2px solid rgba(255, 255, 255, .45);
  transition: all .25s ease 0s;
}

.block:hover {
  background-color: gold;
  color: #444;
  border-color: #666;
}

.block-1 {
  transition-timing-function: ease-in;
}
.block-2 {
  transition-timing-function: linear;
}
.block-3 {
  transition-timing-function: ease-in;
}
.block-4 {
  transition-timing-function: ease-out;
}
.block-5 {
  transition-timing-function: ease-in-out;
}
.block-6 {
  transition-timing-function: step-end;
}
.block-7 {
  transition-timing-function: step-start;
}
.block-8 {
  transition-timing-function: steps(5, end);
}
.block-9 {
  transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 3.0);
}
var blocks = document.getElementsByClassName('block');
var btn = document.getElementById('btn');

btn.onclick = function() {
  for (var i = 0; i < blocks.length; i++) {
    blocks[i].style.animationPlayState = (blocks[i].style.animationPlayState == 'paused') ? 'running' : 'paused';
    btn.innerHTML = (blocks[i].style.animationPlayState == 'paused') ? 'Запустити анімацію' : 'Зупинити анімацію';
  }
}

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