css-series/17-Pseudo Elements (before & after).html at main · jdcodebase/css-series · 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" />
    <title>17 - Pseudo Elements (before & after)</title>

    <style>
      /* Reset default browser styles */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      /* Decorative underline using ::after */
      h2::after {
        content: "";
        display: block;
        width: 60px;
        height: 4px;
        background: crimson;
        margin-top: 8px;
      }

      /* Card container */
      .card {
        position: relative;
        width: 200px;
        height: 120px;
        margin: 30px 0;
        background: #f4f4f4;
      }

      /* Decorative circle on card */
      .card::before {
        content: "";
        width: 40px;
        height: 40px;
        background: teal;
        border-radius: 50%;
        position: absolute;
        top: 20px;
        left: 20px;
      }

      /* Icon container */
      .icon {
        position: relative;
        width: 60px;
        height: 60px;
        background: #ddd;
        margin-top: 20px;
      }

      /* Notification badge using ::after */
      .icon::after {
        content: "3";
        position: absolute;
        top: 6px;
        right: 6px;
        background: red;
        color: white;
        font-size: 15px;
        padding: 4px 6px;
        border-radius: 50%;
      }

      /* Highlighted text */
      .highlight {
        position: relative;
        z-index: 1;
      }

      /* Highlight background using ::before */
      .highlight::before {
        content: "";
        position: absolute;
        width: 100%;
        height: 40px;
        background: yellow;
        left: 0;
        bottom: 0;
        z-index: -1;
      }
    </style>
  </head>

  <body>
    <h2>Pseudo <span class="highlight">Elements</span> Explained</h2>

    <div class="card"></div>

    <div class="icon"></div>
  </body>
</html>