代码示例：（标识：bs_form_checkbox）
<!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.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.bundle.js"></script>
</head>
<body>
<div class="p-4">
<h2>复选框</h2>
<p>如需设置复选框的样式，请使用带有 .form-check 类的容器元素，并将 .form-check-label 添加到标签，并将 .form-check-input 添加到 type="checkbox" 的输入控件中。</p>
<p>下面的表格包含三个复选框。默认选中第一个选项，禁用最后一个选项：</p>
<form action=/index/demo/form_current.html>
<div class="form-check">
<input type="checkbox" class="form-check-input" id="check1" name="option1" value="something" checked>
<label class="form-check-label" for="check1">选项 1</label>
</div>
<div class="form-check">
<input type="checkbox" class="form-check-input" id="check2" name="option2" value="something">
<label class="form-check-label" for="check2">选项 2</label>
</div>
<div class="form-check">
<input type="checkbox" class="form-check-input" disabled>
<label class="form-check-label">选项 3</label>
</div>
<button type="submit" class="btn btn-primary mt-3">提交</button>
</form>
</div>
</body>
</html>
