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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>CSS flex Property Example</title>
  <style>
    body {
      font-family: sans-serif;
      padding: 1.5rem;
      line-height: 1.6;
    }

    .container {
      display: flex;
      gap: 0.35rem;
    }

    .item1 {
      flex: 1;
      background-color: lightcoral;
      padding: 1rem;
      text-align: center;
    }

    .item2 {
      flex: 2;
      background-color: lightblue;
      padding: 1rem;
      text-align: center;
    }

    .item3 {
      flex: 1;
      background-color: lightgreen;
      padding: 1rem;
      text-align: center;
    }
  </style>
</head>
<body>
  <h1>Flex Container with Custom Flex Properties</h1>
  <div class="container">
    <div class="item1">Item 1</div>
    <div class="item2">Item 2</div>
    <div class="item3">Item 3</div>
  </div>
</body>
</html>

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CSS flex Property - Proportional Growth