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这篇文章给大家分享的是有关CSS中margin属性的用法的内容。小编觉得挺实用的，因此分享给大家做个参考。一起跟随小编过来看看吧。

代码入下：HTML文件和CSS文件。

MarginCollapsing01.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
  <link rel="stylesheet" type="text/css" href="MarginCollapsing01.css" />
  </head>
  <body>
  <div class="BaseCanvas">
    <div class="MarginFrame1">亿速云margin属性的偏移量</div>
    <div class="MarginFrame2">亿速云</div>
  </div>
  </body>
  </html>

MarginCollapsing01.css

.BaseCanvas {
  margin-left: 32px;  
  margin-right: 32px;  
  margin-top: 32px;  
  width: calc100%-64px);  
  height: 320px;  
  background-color: #E0E0E0;  
  border: solid 1px #202020;
  }
.MarginFrame1 {
  width: 80%;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 40px;  
  margin-bottom: 40px;  
  margin-left: 12px;  
  margin-right: 8px;
  }
.MarginFrame2 {
  width: 80%;  
  background-color: #9effb5;  
  margin-top: 40px;  
  margin-bottom: 40px;  
  margin-left: 12px;  
  margin-right: 8px;
  }

MarginFrame1 在底部设置40个像素的边距，MarginFrame2设置顶部的40个像素的边距。上框和下框之间的距离等于外框和上框之间的距离，从而不获取具有每个边缘的80像素的边缘，并且可以确认只有40像素的距离。

更改margin大小

编辑CSS文件并将MarginFrame 1下方的边距更改为60像素。

MarginCollapsing01.css

.BaseCanvas {
  margin-left: 32px;  
  margin-right: 32px;  
  margin-top: 32px;  
  width: calc100%-64px);  
  height: 320px;  
  background-color: #E0E0E0;  
  border: solid 1px #202020;
  }
.MarginFrame1 {
  width: 80%;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 40px;  
  margin-bottom: 60px;  
  margin-left: 12px;  
  margin-right: 8px;
  }
.MarginFrame2 {
  width: 80%;  
  background-color: #9effb5;  
  margin-top: 40px;  
  margin-bottom: 40px;  
  margin-left: 12px;  
  margin-right: 8px;
  }

设置float的值

代码如下：

MarginCollapsing02.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
  <link rel="stylesheet" type="text/css" href="MarginCollapsing02.css" />
  </head>
  <body>
  <div class="BaseCanvas">
    <div class="MarginFrame1">框架1</div>
    <div class="MarginFrame2">框架2</div>
    <div class="MarginFrame3">框架3</div>
    <div class="MarginFrame4">框架4</div>
  </div>
  </body>
  </html>

MarginCollapsing02.css

.BaseCanvas {
  margin-left: 32px;  
  margin-right: 32px;  
  margin-top: 32px;  
  width: calc100%-64px);  
  height: 320px;  
  background-color: #E0E0E0;  
  border: solid 1px #202020;
}
.MarginFrame1 {
  width: 160px;  
  float: left;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 32px;  
  margin-bottom: 48px;  
  margin-left: 24px;  
  margin-right: 24px;
}
.MarginFrame2 {
  width: 160px;  
  float: left;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 32px;  
  margin-bottom: 48px;  
  margin-left: 24px;  
  margin-right: 24px;
}
.MarginFrame3 {
  width: 160px;  
  float: left;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 32px;  
  margin-bottom: 48px;  
  margin-left: 24px;  
  margin-right: 24px;
}
.MarginFrame4 {
  width: 160px;  
  float: left;  
  background-color: #fff2a9;  
  border: solid 1px #ff6a00;  
  margin-top: 32px;  
  margin-bottom: 48px;  
  margin-left: 24px;  
  margin-right: 24px;
}

效果如下：

CSS中margin属性的用法-风君子博客