日別アーカイブ: 2021年8月18日

Bootstrapのまとめ5(レスポンシブ)

グリッドオプション(レスポンシブ)

HTMLの記述

<!DOCTYPE html>
 <html lang="ja">
 <head>
   <meta charset="utf-8">
   <title>グリッドシステム</title>
   <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
   <style>
     .orange {
       background-color: orange;
       border: black 1px solid;
     }
   </style>
 </head>
 <body>
   <div class="container">
     <!-- Grid option -->
     <div class="row">
       <div class="col orange">A</div>
       <div class="col orange">B</div>
       <div class="col orange">C</div>
     </div>
     <div class="row">
       <div class="col-sm orange">A</div>
       <div class="col-sm orange">B</div>
       <div class="col-sm orange">C</div>
     </div>
     <div class="row"> 
       <div class="col-lg orange">A</div>
       <div class="col-lg orange">B</div>
       <div class="col-lg orange">C</div>
     </div>
     <div class="row">
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
       <div class="col-lg-1 orange">1</div>
     </div>
     <div class="row">
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
       <div class="col-lg-1 col-md-2 orange">1</div>
     </div>
     <!-- 入れ子 -->
     <div class="row">
       <div class="col-sm-9 orange">
         Level 1: 9
         <div class="row">
           <div class="col-sm-8 orange">
             Level 2: 8          
          </div>          
     <div class="col-sm-4 orange">
             Level 2: 4
           </div>
         </div>
       </div>
       <div class="col-sm-3 orange">
         Level 1: 3
       </div>
     </div>
   </div>
   <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous">
</script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous">
</script>
   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous">
</script>
 </body>
 </html>

※ポイント

  • class = “container”(固定枠)か”container-fluid”(流動枠)の中に書く
  • class = “row”の中に書く
  • class = “col-{prefix}-{columns}”の形で書くこと
  • class = {columns}は合計が12になるようにする

補足:prefixはsm,lg,md,などの決められた画面幅を下回った時表示を変える指定でxs(スマホなど〜767px)からlg(PC大画面1120px~)となっている