响应式设计是指网页可以根据不同设备的屏幕尺寸和分辨率进行自适应的布局，以确保在各种设备上都能提供良好的浏览体验。为了方便开发者实现响应式布局，出现了许多优秀的框架和工具。本文将汇总一些主流的响应式布局框架，并提供具体的代码示例，帮助读者选择最适合自己的工具。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css">
<title>Bootstrap Example</title>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6">
<h1>Hello, World!</h1>
</div>
<div class="col-md-6">
<p>This is a Bootstrap example.</p>
</div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/foundation-sites/dist/css/foundation.min.css">
<title>Foundation Example</title>
</head>
<body>
<div class="grid-container">
<div class="grid-x">
<div class="cell medium-6">
<h1>Hello, World!</h1>
</div>
<div class="cell medium-6">
<p>This is a Foundation example.</p>
</div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/foundation-sites/dist/js/foundation.min.js"></script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css">
<title>Bulma Example</title>
</head>
<body>
<section class="section">
<div class="container">
<div class="columns">
<div class="column">
<h1 class="title">Hello, World!</h1>
</div>
<div class="column">
<p class="subtitle">This is a Bulma example.</p>
</div>
</div>
</div>
</section>
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bulma-modal-fx/dist/js/modal-fx.min.js"></script>
</body>
</html>
这些都只是略微展示了这些框架的基础用法，这些框架都提供了更丰富的组件和功能，可以根据需求进行扩展和定制。读者可以根据自己的项目特点和喜好选择最适合自己的工具，希望本文对读者有所帮助！