css3 flex布局實(shí)現(xiàn)平均分配元素的示例代碼

發(fā)布時(shí)間：2020-07-21 16:20:33 作者：哈嘍哈66606

這篇文章主要介紹了css3 flex布局實(shí)現(xiàn)平均分配元素的示例代碼，文中通過示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

本文主要介紹了css3 flex布局實(shí)現(xiàn)平均分配元素，給自己留個(gè)筆記，也分享給大家，具體如下：

例子一：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
    <title>flex 布局</title>
  <style> 
    *{
      padding:0;
      margin:0;
    }
    body,html{
      height: 100vh;
      min-width: 800px;
    } 
    .container{
      display:flex;
      flex-wrap:wrap;
      display: -webkit-flex; /* Safari */
    }
    .container>.item{
      border: 1px solid black;
      flex:1; 
      height:100px;
      background: #abcdef;
    }
  </style>
</head>
<body>
  <div class="container">  
    <div class="item"></div>
    <main class="item"></main>
    <div class="item"></div>
  </div>
</body>
</html>

例子二：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
    <title>flex 布局</title>
  <style> 
    *{
      padding:0;
      margin:0;
      box-sizing: border-box;
    }
    body,html{
      width: 100%;
      height: 100vh;
      min-width: 800px;
      display:flex;
      display: -webkit-flex; /* Safari */
      justify-content: center;
      align-items: center;
    } 
    .container{
      width: 300px;
      height: 300px;
      display:flex;
      display: -webkit-flex; /* Safari */
      flex-wrap: wrap;
    }
    .container>.item{
      flex:0 0 33.3%; 
      height:100px;
      background: #abcdef;
      border: 1px solid red;
    }
    main{
      flex:0 0 33.3%; 
      height:100px;
      background-color: #ccc;
      border: 1px solid red;
    }
  </style>
</head>
<body>
  <div class="container">  
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
  </div>
</body>
</html>

flex:0 0 33.3% 相當(dāng)于flex-basis:33.3%，使每一個(gè)元素的寬度占外層容器的33.3%，因此每行最多能夠排開三個(gè)元素。

flex-wrap:wrap 表示每行填滿時(shí)會(huì)自動(dòng)換行。

例子三：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
    <title>flex 布局</title>
  <style> 
    *{
      padding:0;
      margin:0;
      box-sizing: border-box;
    }
    body,html{
      width: 100%;
      height: 100vh;
      min-width: 800px;
      display:flex;
      display: -webkit-flex; /* Safari */
      justify-content: center;
      align-items: center;
    } 
    .container{
      width: 300px;
      height: 300px;
      margin: 50px;
      display:flex;
      display: -webkit-flex; /* Safari */
      flex-wrap: wrap;
      justify-content: space-between;
    }
    .container>.item{
      flex:0 0 30%; 
      height:90px;
      background: #abcdef;
      border: 1px solid red;
    }
    main{
      flex:0 0 30%; 
      height:90px;
      background-color: #ccc;
      border: 1px solid red;
    }
  </style>
</head>
<body>
  <div class="container">  
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
    <div class="item">left</div>
    <main>main</main>
    <div class="item">right</div>
  </div>
</body>
</html>