Loopcode/11css.html at main · Dharmandra-singh/Loopcode · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-D0ENCWPZL9"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-D0ENCWPZL9');
</script>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>11. Responsive Design</title>
  <style>
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Poppins', sans-serif;
      background-color: #88e3dd;
      padding: 20px;
    }
    .section {
      background: rgba(255,255,255,0.3);
      padding: 20px;
      border-radius: 15px;
      max-width: 1000px;
      margin: auto;
      box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    }
    h2, h3 { color: #034f84; margin-bottom: 15px; }
    p {
      font-size: 18px;
      margin-bottom: 15px;
      line-height: 1.6;
    }
    textarea, iframe {
      width: 100%;
      height: 180px;
      font-size: 16px;
      padding: 10px;
      margin: 10px 0 20px;
      border-radius: 10px;
      border: 2px solid white;
      background: rgba(255,248,240,0.4);
      font-family: monospace;
      resize: vertical;
      overflow: auto;
    }
    iframe {
      background: white;
      border: 1px solid #ccc;
    }
    button {
      background: #007bff;
      color: #fff;
      border: none;
      padding: 8px 20px;
      font-size: 15px;
      font-weight: 500;
      border-radius: 8px;
      cursor: pointer;
      margin-bottom: 20px;
      transition: all 0.3s ease-in-out;
      position: relative;
      overflow: hidden;
    }
    button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(120deg, #00bcd4, #2196f3);
      transition: all 0.4s ease;
      z-index: -1;
    }
    button:hover::before { left: 0; }
    button:hover {
      color: #fff;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
      transform: translateY(-1px);
    }
    button:active {
      transform: scale(0.95);
      box-shadow: none;
    }
  </style>
</head>
<body>
  <div class="section">
    <h2>11. Responsive Design</h2>

    <h3>I. Media Queries</h3>
    <p><strong>Explanation:</strong> Media Queries ka use screen size ke hisaab se alag CSS apply karne ke liye hota hai. Jaise mobile, tablet, aur desktop ke layout alag ho sakte hain.</p>

    <textarea id="code1">
<style>
  body {
    background-color: lightblue;
  }

  @media (max-width: 600px) {
    body {
      background-color: lightcoral;
    }
  }
</style>
<h2>Resize this window</h2>
<p>Screen choti hogi to background change hoga!</p>
    </textarea>
    <button onclick="runCode('code1', 'output1')">Run Code</button>
    <iframe id="output1"></iframe>

    <h3>II. Responsive Units (vw, vh, rem, em)</h3>
    <p><strong>Explanation:</strong> px ke bajay responsive units jaise <code>vw</code> (viewport width), <code>vh</code> (viewport height), <code>rem</code> (root font size), aur <code>em</code> (parent font size) use karte hain taaki layout flexible ho.</p>

    <textarea id="code2">
<style>
  h2 {
    font-size: 5vw;
  }
  p {
    font-size: 2em;
  }
</style>
<h2>This is responsive heading</h2>
<p>This is responsive paragraph</p>
    </textarea>
    <button onclick="runCode('code2', 'output2')">Run Code</button>
    <iframe id="output2"></iframe>

    <h3>III. Mobile-first Design</h3>
    <p><strong>Explanation:</strong> Mobile-first approach me hum pehle mobile ke liye design karte hain, aur baad me media queries ke through larger screens ke liye adjust karte hain.</p>

    <textarea id="code3">
<style>
  .box {
    width: 100%;
    background-color: salmon;
    padding: 20px;
    text-align: center;
  }

  @media (min-width: 768px) {
    .box {
      width: 50%;
      margin: auto;
      background-color: seagreen;
    }
  }
</style>
<div class="box">Resize me - Mobile First!</div>
    </textarea>
    <button onclick="runCode('code3', 'output3')">Run Code</button>
    <iframe id="output3"></iframe>

    <h3>IV. Fluid Layouts</h3>
    <p><strong>Explanation:</strong> Fluid layouts me fixed width ki jagah percentage use ki jati hai jisse layout screen ke hisaab se adjust ho jata hai.</p>

    <textarea id="code4">
<style>
  .container {
    width: 80%;
    background-color: lightgreen;
    margin: auto;
    padding: 20px;
  }
</style>
<div class="container">I am a fluid layout box!</div>
    </textarea>
    <button onclick="runCode('code4', 'output4')">Run Code</button>
    <iframe id="output4"></iframe>

  </div>

  <script>
    function runCode(textareaId, iframeId) {
      const code = document.getElementById(textareaId).value;
      const iframe = document.getElementById(iframeId);
      const doc = iframe.contentDocument || iframe.contentWindow.document;
      doc.open();
      doc.write(code);
      doc.close();
    }
  </script>
</body>
</html>