Title1

Title2

Title3

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111網頁前端設計工程師培訓班

7-4 Grid System

Bootstrap的網格系統(Grid System)，是使用flexbox建構，使用容器(container)、列(rows)、欄(columns)

  1. container > row > col
  2. 每列有12欄
<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Grid System</title>
  <!-- Bootstrap CSS -->
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-0evHe/X+R7YkIZDRvuzKMRqM+OrBnVFBL6DOitfPri4tjfHxaWutUpFmBp4vmVor" crossorigin="anonymous">
</head>
<Style>
  html,
  body {
    height: 100%;
  }

  .container {
    border: 0px solid;
    background-color: #dbdbdb;
    min-height: 100%;
    height: 100%
  }

  .col {
    background-color: #ccffff;
  }

  .col-2 {
    background-color: #6666ff;
  }
</style>

<body>
  <div class="container">
    <div class="h-100 row">
      <div class="col-2">
        左欄
      </div>
      <div class="col">
        內容區
      </div>
      <div class="col-2">
        右欄
      </div>
    </div>
  </div>
  <!-- Bootstrap JS -->
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-pprn3073KE6tl6bjs2QrFaJGz5/SUsLqktiwsUTF55Jfv3qYSDhgCecCxMW52nD2" crossorigin="anonymous"></script>
</body>

</html>

 

欄的斷點

  xs
<576px		 sm
≥576px		 md
≥768px		 lg
≥992px		 xl
≥1200px		 xxl
≥1400px
.container None
(auto)		 540px
720px  
960px 1140px 1320px
class樣式 .col-* .col-sm-*
.col-md-*  
.col-lg-* .col-xl-* .col-xxl-*

 

ex：將之設定為col-lg，則超過 992px時，有作用

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