html 实例源码
实例源码：
源代码：
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1
<!DOCTYPE html>2
<html>3
<head>4
<title>Bootstrap 实例</title>5
<meta charset="utf-8">6
<meta name="viewport" content="width=device-width, initial-scale=1">7
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">8
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>9
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>10
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>11
</head>12
<body>13
14
<div class="container">15
<h2>表头颜色</h2>16
<p>.thead-dark 类用于给表头添加黑色背景， .thead-light 类用于给表头添加灰色背景:</p> 17
<table class="table">18
<thead class="thead-dark">19
<tr>20
<th>Firstname</th>21
<th>Lastname</th>22
<th>Email</th>23
</tr>24
</thead>25
<tbody>26
<tr>27
<td>John</td>28
<td>Doe</td>29
<td>john@example.com</td>30
</tr>31
<tr>32
<td>Mary</td>33
<td>Moe</td>34
<td>mary@example.com</td>35
</tr>36
<tr>37
<td>July</td>38
<td>Dooley</td>39
<td>july@example.com</td>40
</tr>41
</tbody>42
</table>43
<table class="table">44
<thead class="thead-light">45
<tr>46
<th>Firstname</th>47
<th>Lastname</th>48
<th>Email</th>49
</tr>50
</thead>51
<tbody>52
<tr>53
<td>John</td>54
<td>Doe</td>55
<td>john@example.com</td>56
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