progress/courses/udemy/modern-html-css-from-the-beginning-including-sass/07-more-css-concepts/07-keyframes.html at main · gbgabiola/progress · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Keyframes</title>
  <style>
    body { background: #333; }

    .box {
      position: relative;
      width: 200px;
      height: 200px;
      background: white;
      /* animation-name: animate1; */
      /* animation-duration: 5s; */
      /* animation-iteration-count: 1; */
      /* animation-fill-mode: forwards; */
      /* animation-delay: 2s; */
      /* animation-direction: alternate; */
      /* animation-timing-function: ease-in-out; */
      animation: animate1 5s forwards 1s ease-in-out;
    }

    @keyframes animate1 {
      from {
        top: 0;
      }

      to {
        width: 600px;
        background: red;
        top: 300px;
      }
    }
  </style>
</head>
<body>
  <div class="box"></div>

</body>
</html>