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CSS面試題-如何實作左邊定寬，右邊自适應

1-5、左邊定寬，右邊自适應

1-5.1 什麼是左邊定寬右邊自适應布局？

外層盒子寬度确定情況下，左側盒子寬度不固定，右邊盒子寬度自适應。

CSS面試題-如何實作左邊定寬，右邊自适應

1-5.2 如何實作左邊定寬，右邊自适應布局

非嚴格意義：

  • float+calc 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>左邊定寬右邊自适-float+calc</title>
  <style>
    * {
      margin:0;
      padding:0;
    }
    .box-wrapper {
      width: 600px;
      height: 400px;
      border: 1px solid #000;
    }
    .left-box {
      float:left;
      width: 200px;
      height: 100%;
      background: red;
    }
    .right-box {
      float: right;
      width: calc(100% - 200px);
      height: 100%;
      background: blue;
    }
  </style>
</head>
<body>
  <div class="box-wrapper">
    <div class="left-box">
      left-box 
    </div>
    <div class="right-box">
      right-box
    </div>
  </div>
</body>
</html>
  • inline-block calc 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>左邊定寬右邊自适-inline-block+calc</title>
  <style>
  
    * {
      margin:0;
      padding:0;
    }

    .box-wrapper {
      width: 600px;
      height: 400px;
      border: 1px solid #000;
    }

    .left-box {
      display: inline-block;
      width: 200px;
      height: 100%;
      background: red;
    }

    .right-box {
      display: inline-block;
      width: calc(100% - 200px);
      height: 100%;
      background: blue;
    }

  </style>
</head>
<body>
  <div class="box-wrapper">
    <div class="left-box">
      left-box 
    </div>
    <div class="right-box">
      right-box
    </div>
  </div>
</body>
</html>
  • position padding 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title> 左邊定寬右邊自适應 + position + calc</title>
  <style>
  
    .box-wrapper {
      width: 600px;
      height: 400px;
      position: relative;
      border: 1px solid #000;
    }  

    .left-box {
      width: 200px;
      height: 100%;
      background: red;
      position: absolute;
    }
  
    .right-box {
      padding-left:200px;
      height: 100%;
      background: blue;
    }

  </style>
</head>
<body>
    <div class="box-wrapper">
      <div class="left-box">
        left-box 
      </div>
      <div class="right-box">
        right-box
      </div>
    </div>
</body>
</html>

嚴格意義：

  • flex布局 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>左邊定寬右邊自适 - flex </title>
  <style>
    .box-wrapper {
      width: 600px;
      height: 400px;
      border:1px solid #000;
      /* flex布局 */
      display: flex;
    }   

    .left-box {
      width: 200px;
      height: 100%;
      background: red;
    }
  
    .right-box {
      background: blue;
      flex: 1;
    }
  </style>
</head>
<body>
  <div class="box-wrapper">
    <div class="left-box">
      left-box 
    </div>
    <div class="right-box">
      right-box
    </div>
  </div>
</body>
</html>
  • table布局 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>左邊定寬右邊自适 - table 布局 </title>
  <style>
    .box-wrapper {
      width: 600px;
      height: 400px;
      border: 1px solid #000;
      /* table 布局 */
      display: table;
    }

    .left-box {
      width: 200px;
      height: 100%;
      background: red;
      display: table-cell;
    }
  
    .right-box {
      height: 100%;
      background: blue;
      display: table-cell;
    }
  
  </style>
</head>
<body>
  <div class="box-wrapper">
    <div class="left-box">
      left-box 
    </div>
    <div class="right-box">
      right-box
    </div>
  </div>
</body>
</html>
  • grid布局 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>左邊定寬右邊自适 + grid 布局</title>
  <style>
    .box-wrapper {
      width: 600px;
      height: 400px;
      border:1px solid #000;
      display: grid;
      /* 聲明列的寬度 */
      grid-template-columns: 200px auto;
    }

    .left-box {
      background: red;
    }
  
    .right-box {
      background: blue;
    }
  </style>
</head>
<body>
  <div class="box-wrapper">
    <div class="left-box">
      left-box 
    </div>
    <div class="right-box">
      right-box
    </div>
  </div>
</body>
</html>
面試準備 css css3 html
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