【学习css3】使用flex和grid实现等高元素布局

过往的实现方法是使用浮动加计算布局来实现，当flex和grid问世时，这一切将变得简单起来

一、简单的两列实现

1、先看页面效果

2、css代码

    .container {
      padding: 10px;
      width: 100ch;
      margin: 0 auto;
      box-shadow: inset 0 0 0 2px #ccc;
    }
    .column {
      margin: 20px;
      background-color: #ccc;
      padding: 10px;
    }
    .flexbox {
      display: flex;
    }

    .grid {
      display: grid;
      grid-auto-flow: column;
    }

3、html代码

    <div class="container">flex布局</div>
  <div class="container flexbox">
    <div class="column">
      <div class="element">
        <p> 松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
  <div class="container">grid布局</div>
  <div class="container grid">
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>

二、每行放置3列，多出来的自动到下一行

1、还是先看页面效果

2、css代码

    .container {
      padding: 10px;
      width: 100ch;
      margin: 0 auto;
      box-shadow: inset 0 0 0 2px #ccc;
    }
    .column {
      margin: 20px;
      background-color: #ccc;
      padding: 10px;
    }
    .flexbox {
      display: flex;
    }
    .flexbox.col-3 {
      flex-wrap: wrap;
    }
    .flexbox.col-3 .column {
      margin: 0.5rem;
      width: calc((100% / 3) - 1rem);
    }


    .grid {
      display: grid;
      grid-auto-flow: column;
    }
    .grid.col-3 {
      grid-gap: 1rem;
      grid-template-columns: repeat(3, 1fr);
      grid-auto-flow: unset;
    }
    .grid.col-3 .column {
      margin: 0;
    }

3、html代码

<div class="container">flex布局</div>
  <div class="container flexbox col-3">
    <div class="column">
      <div class="element">
        <p>flexbox col-3: 甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>蛋奶酥馅饼，柠檬糖，小熊软糖，棒棒糖，甜点，芝麻饼干。提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
  <div class="container">grid布局</div>
  <div class="container grid col-3">
    <div class="column">
      <div class="element">
        <p>grid col-3:甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>蛋奶酥馅饼，柠檬糖，小熊软糖，棒棒糖，甜点，芝麻饼干。提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>

三、全部代码

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>使用flex和grid实现等高元素布局</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    .container {
      padding: 10px;
      width: 100ch;
      margin: 0 auto;
      box-shadow: inset 0 0 0 2px #ccc;
    }
    .column {
      margin: 20px;
      background-color: #ccc;
      padding: 10px;
    }
    .flexbox {
      display: flex;
    }
    .flexbox.col-3 {
      flex-wrap: wrap;
    }
    .flexbox.col-3 .column {
      margin: 0.5rem;
      width: calc((100% / 3) - 1rem);
    }


    .grid {
      display: grid;
      grid-auto-flow: column;
    }
    .grid.col-3 {
      grid-gap: 1rem;
      grid-template-columns: repeat(3, 1fr);
      grid-auto-flow: unset;
    }
    .grid.col-3 .column {
      margin: 0;
    }
  </style>
</head>
<body>
  <div class="container">flex布局</div>
  <div class="container flexbox">
    <div class="column">
      <div class="element">
        <p> 松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>

      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
  <div class="container">grid布局</div>
  <div class="container grid">
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>

      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
  <div class="container">flex布局</div>
  <div class="container flexbox col-3">
    <div class="column">
      <div class="element">
        <p>flexbox col-3: 甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>蛋奶酥馅饼，柠檬糖，小熊软糖，棒棒糖，甜点，芝麻饼干。提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
  <div class="container">grid布局</div>
  <div class="container grid col-3">
    <div class="column">
      <div class="element">
        <p>grid col-3:甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>松饼冰淇淋小熊软糖。甜苹果派，蛋糕，糖果，胡萝卜蛋糕。糖蛋奶酥，柠檬糖软糖。</p>
      </div>
    </div>
    <div class="column">
      <div class="element">
        <p>蛋奶酥馅饼，柠檬糖，小熊软糖，棒棒糖，甜点，芝麻饼干。提拉米苏粉布丁。蛋糕芝士蛋糕糕点焦糖提拉米苏。</p>
      </div>
    </div>
  </div>
</body>
</html>

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