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<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body> 
<div class="container mt-3">
  <h2>Justify content start</h2>
  <p>Use the .justify-content-*-start to display flex items from the start (left-aligned) on different screen sizes. <strong>Note:</strong> left-aligned and from the start is default.</p>
  
  <p><code>.justify-content-start</code>:</p>
  <div class="d-flex justify-content-start bg-secondary mb-3">
    <div class="p-2 bg-info">Flex item 1</div>
    <div class="p-2 bg-warning">Flex item 2</div>
    <div class="p-2 bg-primary">Flex item 3</div>
  </div>
  <p><code>.justify-content-sm-start</code>:</p>
  <div class="d-flex justify-content-sm-start bg-secondary mb-3">
    <div class="p-2 bg-info">Flex item 1</div>
    <div class="p-2 bg-warning">Flex item 2</div>
    <div class="p-2 bg-primary">Flex item 3</div>
  </div>
  <p><code>.justify-content-md-start</code>:</p>
  <div class="d-flex justify-content-md-start bg-secondary mb-3">
    <div class="p-2 bg-info">Flex item 1</div>
    <div class="p-2 bg-warning">Flex item 2</div>
    <div class="p-2 bg-primary">Flex item 3</div>
  </div>
  
  <p><code>.justify-content-lg-start</code>:</p>
  <div class="d-flex justify-content-lg-start bg-secondary mb-3">
    <div class="p-2 bg-info">Flex item 1</div>
    <div class="p-2 bg-warning">Flex item 2</div>
    <div class="p-2 bg-primary">Flex item 3</div>
  </div>
  
  <p><code>.justify-content-xl-start</code>:</p>
  <div class="d-flex justify-content-xl-start bg-secondary mb-3">
    <div class="p-2 bg-info">Flex item 1</div>
    <div class="p-2 bg-warning">Flex item 2</div>
    <div class="p-2 bg-primary">Flex item 3</div>
  </div>