<!DOCTYPE html>
<html>
<head>
</head>
<body>
  <h3>transition-timing-function</h3>
  <div>ease</div>
  <div>linear</div>
  <div>ease-in</div>
  <div>ease-out</div>
  <div>ease-in-out</div>
</body>
</html>
div {
  font: bold 16px/50px "Open Sans";
  color: white;
  text-align: center;
  width: 100px;
  height: 50px;
  background-color: green;
  margin-bottom: 10px;
  transition: width 2s;
}
div:nth-child(1) {
  transition-timing-function: ease;
}
div:nth-child(2) {
  transition-timing-function: linear;
}
div:nth-child(3) {
  transition-timing-function: ease-in;
}
div:nth-child(4) {
  transition-timing-function: ease-out;
}
div:nth-child(5) {
  transition-timing-function: ease-in-out;
}
div:hover {
  width: 300px;
}

External CSS

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External JavaScript

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