css-flexbox-advanced-concepts.html

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  <title>17. CSS Flexbox: Advanced Concepts</title>
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  <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>

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