Loopcode/17css.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>17. CSS Flexbox: Advanced Concepts</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Poppins', sans-serif;
      background: #1cc9be;
      color: #222;
    }
    .section {
      background: rgba(255, 255, 255, 0.3);
      padding: 20px;
      margin: 25px auto;
      border-radius: 12px;
      max-width: 1000px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    }
    h2, h3 {
      color: #333;
      margin-bottom: 15px;
    }
    p {
      font-size: 18px;
      margin-bottom: 20px;
      line-height: 1.7;
    }
    textarea {
      width: 100%;
      height: 170px;
      font-family: 'Courier New', monospace;
      font-size: 16px;
      padding: 14px;
      background-color: rgba(255, 255, 255, 0.95);
      border: 2px solid #ccc;
      border-radius: 10px;
      margin: 12px 0;
      color: #222;
      transition: all 0.3s ease;
      resize: vertical;
      box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.1);
    }
    textarea:focus {
      outline: none;
      border-color: #00c6ff;
      box-shadow: 0 0 8px rgba(0, 198, 255, 0.5);
    }
    button {
      background: linear-gradient(135deg, #00c6ff, #0072ff);
      color: white;
      padding: 8px 18px;
      font-size: 15px;
      border: none;
      border-radius: 30px;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }
    button:hover {
      transform: scale(1.05);
      box-shadow: 0 6px 14px rgba(0, 0, 0, 0.3);
    }
    iframe {
      width: 100%;
      height: 160px;
      border: 2px solid white;
      background: rgba(255, 255, 255, 0.9);
      border-radius: 10px;
      margin-top: 10px;
    }
  </style>
</head>
<body>
  <div class="section">
    <h2>17. CSS Flexbox: Advanced Concepts</h2>

    <h3>I. Align-items & Align-self</h3>
    <p><strong>Explanation:</strong> <code>align-items</code> container ke andar sabhi items ko vertically align karta hai. <code>align-self</code> se ek individual item ko override kiya ja sakta hai.</p>

    <textarea id="code1">
<style>
  .flexbox {
    display: flex;
    align-items: center;
    height: 150px;
    background: #e0f7fa;
  }
  .box {
    width: 60px;
    height: 60px;
    background: #ff6f61;
    margin: 10px;
  }
  .box.self {
    align-self: flex-end;
    background: #4caf50;
  }
</style>

<div class="flexbox">
  <div class="box"></div>
  <div class="box self"></div>
  <div class="box"></div>
</div>
    </textarea>
    <button onclick="runCode('code1', 'output1')">Run Code</button>
    <iframe id="output1"></iframe>

    <h3>II. Justify-content</h3>
    <p><strong>Explanation:</strong> <code>justify-content</code> horizontal alignment control karta hai flex container me.</p>

    <textarea id="code2">
<style>
  .flexbox {
    display: flex;
    justify-content: space-around;
    background: #d1c4e9;
    padding: 10px;
  }
  .box {
    width: 50px;
    height: 50px;
    background: #673ab7;
  }
</style>

<div class="flexbox">
  <div class="box"></div>
  <div class="box"></div>
  <div class="box"></div>
</div>
    </textarea>
    <button onclick="runCode('code2', 'output2')">Run Code</button>
    <iframe id="output2"></iframe>

    <h3>III. Flex-grow & Flex-shrink</h3>
    <p><strong>Explanation:</strong> <code>flex-grow</code> space expand karne ke liye hota hai, jabki <code>flex-shrink</code> space kam karne ke liye hota hai.</p>

    <textarea id="code3">
<style>
  .flexbox {
    display: flex;
    background: #fbe9e7;
  }
  .box {
    height: 60px;
    margin: 5px;
    background: #ff5722;
  }
  .grow1 {
    flex-grow: 1;
  }
  .grow2 {
    flex-grow: 2;
    background: #ff9800;
  }
</style>

<div class="flexbox">
  <div class="box grow1">1x</div>
  <div class="box grow2">2x</div>
</div>
    </textarea>
    <button onclick="runCode('code3', 'output3')">Run Code</button>
    <iframe id="output3"></iframe>

    <h3>IV. Flex Wrap</h3>
    <p><strong>Explanation:</strong> <code>flex-wrap</code> allow karta hai items ko wrap hone ka jab width kam ho.</p>

    <textarea id="code4">
<style>
  .flexbox {
    display: flex;
    flex-wrap: wrap;
    background: #b2ebf2;
  }
  .box {
    width: 200px;
    height: 100px;
    margin: 10px;
    background: #009688;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
  }
</style>

<div class="flexbox">
  <div class="box">Box 1</div>
  <div class="box">Box 2</div>
  <div class="box">Box 3</div>
  <div class="box">Box 4</div>
</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>