# 兩欄式
操作範例
### 範例一、使用clear:both
{% tabs %}
{% tab title="css" %}
```css
.wrap { background-color: pink; width: 500px;
margin-left: auto; margin-right: auto; }
.clearFix { display: block; clear: both; }
.navi, .main { float: left; }
.navi {
background-color: yellowgreen;
width: 100px;
}
.main {
background-color: gray;
width: 400px;
}
```
{% endtab %}
{% tab title="html" %}
```markup
```
{% endtab %}
{% endtabs %}
### 範例二、margin
```css
@charset "utf-8";
.wrap {
background-color: pink;
width: 500px;
margin-left: auto;
margin-right: auto;
}
.navi {
float: left;
width: 100px;
background-color: yellowgreen;
}
.main {
margin-left: 100px;
background-color: gray;
}
```
### 範例三、float
```css
@charset "utf-8";
.wrap {
background-color: pink;
width: 500px;
margin-left: auto;
margin-right: auto;
overflow: hidden;
}
.navi, .main {
float: left;
}
.navi {
background-color: yellowgreen;
width: 100px;
}
.main {
background-color: gray;
width: 400px;
}
```
### 範例四、 after、 before
```css
@charset "utf-8";
.wrap {
background-color: pink;
width: 500px;
margin-left: auto;
margin-right: auto;
}
.wrap::after {
content: "";
display: block;
clear: both;
}
.navi, .main {
float: left;
}
.navi {
background-color: yellowgreen;
width: 100px;
}
.main {
background-color: gray;
width: 400px;
}
```
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