css-examples/learn/values-units/length.html at 8b1ec341fa45b11fcabfdea0e320bb62cd4e38e2 · mdn/css-examples · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>Values and Units: length</title>
    <link rel="stylesheet" href="../styles.css" />
    <style>
      * {
        box-sizing: border-box;
      }
      .box {
        background-color: lightblue;
        border: 5px solid darkblue;
        padding: 10px;
        margin: 1em 0;
      }
    </style>

    <style class="editable">
      .wrapper {
        font-size: 1em;
      }

      .px {
        width: 200px;
      }

      .vw {
        width: 10vw;
      }

      .em {
        width: 10em;
      }
    </style>
  </head>

  <body>
    <section class="preview">
      <div class="wrapper">
        <div class="box px">I am 200px wide</div>
        <div class="box vw">I am 10vw wide</div>
        <div class="box em">I am 10em wide</div>
      </div>
    </section>

    <textarea class="playable playable-css" style="height: 280px;">
.wrapper {
  font-size: 1em;
}

.px {
  width: 200px;
}

.vw {
  width: 10vw;
}

.em {
  width: 10em;
}
    </textarea>

    <textarea class="playable playable-html" style="height: 130px;">
<div class="wrapper">
  <div class="box px">I am 200px wide</div>
  <div class="box vw">I am 10vw wide</div>
  <div class="box em">I am 10em wide</div>
</div>
    </textarea>

    <div class="playable-buttons">
      <input id="reset" type="button" value="Reset" />
    </div>
  </body>
  <script src="../playable.js"></script>
</html>