Bootstrap 样式设计 栅格系统

时间：2024-12-07 17:04:08

.col-xs- 超小屏幕 手机 (<768px)

.col-sm- 小屏幕 平板 (≥768px)

.col-md- 中等屏幕 桌面显示器 (≥992px)

.col-lg- 大屏幕 大桌面显示器 (≥1200px)

<!DOCTYPE html>

<html lang="en">

<head>

<meta charset="utf-8">

<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<title>Bootstrap Test</title>

<style>

body {

  padding-top: 2rem;

  padding-bottom: 2rem;

}

h3 {

  margin-top: 2rem;

}

.row {

  margin-bottom: 1rem;

}

.row .row {

  margin-top: 1rem;

  margin-bottom: 0;

}

[class*="col-"] {

  padding-top: 1rem;

  padding-bottom: 1rem;

  background-color: rgba(86, 61, 124, .15);

  border: 1px solid rgba(86, 61, 124, .2);

}

hr {

  margin-top: 2rem;

  margin-bottom: 2rem;

}

</style>

</head>

<body>

      <main class="container">

    <nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">

      <a class="navbar-brand" href="#">Navbar</a>

      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation">

        <span class="navbar-toggler-icon"></span>

      </button>

      <div class="collapse navbar-collapse" id="navbarsExampleDefault">

        <ul class="navbar-nav mr-auto">

          <li class="nav-item active">

            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>

          </li>

          <li class="nav-item">

            <a class="nav-link" href="#">Link</a>

          </li>

          <li class="nav-item">

            <a class="nav-link disabled" href="#">Disabled</a>

          </li>

          <li class="nav-item dropdown">

            <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>

            <div class="dropdown-menu" aria-labelledby="dropdown01">

              <a class="dropdown-item" href="#">Action</a>

              <a class="dropdown-item" href="#">Another action</a>

              <a class="dropdown-item" href="#">Something else here</a>

            </div>

          </li>

        </ul>

        <form class="form-inline my-2 my-lg-0">

          <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">

          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>

        </form>

      </div>

    </nav>

   <h1>Bootstrap grid examples</h1>

      <p class="lead">Basic grid layouts to get you familiar with building within the Bootstrap grid system.</p>

      <h3>Five grid tiers</h3>

      <p>There are five tiers to the Bootstrap grid system, one for each range of devices we support. Each tier starts at a minimum viewport size and automatically applies to the larger devices unless overridden.</p>

   <div class="row">

    <div class="col-sm">

      One of three columns

    </div>

    <div class="col-sm">

      One of three columns

    </div>

    <div class="col-sm">

      One of three columns

    </div>

  </div>

  <div class="row">

  <div class="col-3">col</div>

  <div class="col-3">col</div>

  <div class="col-3">col</div>

  <div class="col-3">col</div>

</div>

<div class="row">

  <div class="col-8">col-8</div>

  <div class="col-4">col-4</div>

</div>

    </main><!-- /.container -->

<table class="table table-striped table-bordered">

<tr><th>No</th><th>Name</th><th>Age</th><th>Gendle</th></tr>

<tr><td>001</td><td>Tom</td><td>18</td><td>Male</td></tr>

<tr><td>002</td><td>Tom</td><td>18</td><td>Male</td></tr>

<tr><td>003</td><td>Tom</td><td>18</td><td>Male</td></tr>

<tr><td>004</td><td>Tom</td><td>18</td><td>Male</td></tr>

</table>

<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>

<script src="https://cdn.bootcss.com/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>

<script src="https://cdn.bootcss.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

</body>

</html>

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