CSS 圣杯/双飞翼布局

常用布局

圣杯布局

html结构
 <body>
    <div class="container clearfix">
      <div class="center"></div>
      <div class="left"></div>
      <div class="right"></div>
    </div>
    <div>
      <div>123</div>
      <div>123</div>
      <div>123</div>
    </div>
  </body>
css:
container

把左右两边距离空出来

.container {
    padding: 0 200px;
}
center

设置widh为100%，即充满整个容器

.center {
    width: 100%;
}
浮动

设置left，center，right左浮动。
清除container浮动，保证后面的div正常布局

.left, .center, .right {
    float: left;
}
.clearfix::after {
    display: block;
    height: 0;
    content: "";
    visibility: hidden;
    clear: both
}
.clearfix {
    *zoom: 1;
}
left

使用margin-left： -100%;

.left {
    position: relative;
    margin-left: -100%;
    left: -200px;
}

使用margin-right: -200px；;

.right {
    margin-right: -200px;
}

为什么不用相对定位来移动

.right {
position: relative;
left: -200px;
}

会在第二行向左移动200px，不能和center同行

代码
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style type="text/css">
      html,
      body {
        height: 100%;
        overflow: hidden;
        margin: 0;
        padding: 0;
      }

      .container {
        padding: 0 200px;
      }
      .left,
      .right {
        width: 200px;
        min-height: 200px;
      }
      .left {
        background: lightgreen;
      }
      .right {
        background: lightgrey;
      }
      .center {
        width: 100%;
        min-height: 400px;
        background: lightsalmon;
      }

      .left,
      .center,
      .right {
        float: left;
      }
      .left {
        position: relative;
        margin-left: -100%;
        left: -200px;
      }
      .right {
        margin-right: -200px;
        /* position: relative; */
        /* left: -200px; */
      }
      .clearfix::after {
        display: block;
        height: 0;
        content: "";
        visibility: hidden;
        clear: both;
      }
      .clearfix {
        *zoom: 1;
      }
    </style>
  </head>
  <body>
    <div class="container clearfix">
      <div class="center"></div>
      <div class="left"></div>
      <div class="right"></div>
    </div>
    <div>
      <div>123</div>
      <div>123</div>
      <div>123</div>
    </div>
  </body>
</html>

双飞翼布局

HTML结构

 <body>
    <div class="container">
      <div class="cemter"></div>
    </div>
    <div class="left"></div>
    <div class="right"></div>
  </body>

container

.container {
    width: 100%;
    background: lightseagreen;
    height: 700px;
}

center

.center {
    min-height: 400px;
    background: lightpink;
    margin: 0 200px;
}

浮动

.container, .left, .right {
    float: left;
}
.clearfix::after {
    display: block;
    height: 0;
    content: "";
    visibility: hidden;
    clear: both;
}
.clearfix {
    *zoom: 1;
}

left

.left {
        margin-left: -100%;
        width: 200px;
        min-height: 400px;
        background: lightskyblue;
      }

right

.right {
        margin-left: -200px;
        width: 200px;
        min-height: 400px;
        background: lightgoldenrodyellow;
      }
代码
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style type="text/css">
      html,
      body {
        width: 100%;
        margin: 0;
        padding: 0;
        overflow: hidden;
      }
      .container {
        width: 100%;
        background: lightseagreen;
        height: 700px;
      }
      .center {
        min-height: 400px;
        background: lightpink;
        margin: 0 200px;
      }
      .container,
      .left,
      .right {
        float: left;
      }
      .left {
        margin-left: -100%;
        width: 200px;
        min-height: 400px;
        background: lightskyblue;
      }
      .right {
        margin-left: -200px;
        width: 200px;
        min-height: 400px;
        background: lightgoldenrodyellow;
      }
      .clearfix::after {
        display: block;
        height: 0;
        content: "";
        visibility: hidden;
        clear: both;
      }
      .clearfix {
        *zoom: 1;
      }
    </style>
  </head>
  <body>
    <div class="container">
      <div class="center"></div>
    </div>
    <div class="left"></div>
    <div class="right"></div>
  </body>
</html>

图解:

posted @ 2020-09-19 12:32  lemon-Xu  阅读(103)  评论(0)  编辑  收藏  举报