CodePen Embed - What are transition?

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>What are transition?</title>
</head>
<body>
  <h1 class="heading without">Without Transition</h1>
  
  <br><br>
  
  <h1 class="heading with">With Transition</h1>
</body>
</html>

.heading
{
  color: darkblue;
  font-size: 30px;
}

.heading:hover
{
  color: aqua;
  font-size: 50px;
}

/* ------------------------------------------- */

.with
{
  transition: all 0.5s;
}

// https://scrimba.com/learn/cssanimations

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