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                            現在有一個問題，如果有想為 p 標簽單獨設置下邊框，而其它三邊都不設置邊框樣式怎么辦呢？css 樣式中允許只為一個方向的邊框設置樣式：

~~~
div{border-bottom:1px solid red;}
~~~

同樣可以使用下面代碼實現其它三邊(上、右、左)邊框的設置：

~~~
border-top:1px solid red;
border-right:1px solid red; 
border-left:1px solid red;
~~~

### 任務

**我也來試試，為 li 標簽設置下邊框樣式**

1.在右邊編輯器的第 8 行，輸入：

~~~
border-bottom:1px dotted #ccc;
~~~
```
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>邊框</title>
<style type="text/css">
li{
    
}
</style>
</head>
<body>
<ul>
    <li>別讓不會說話害了你</li>
    <li>二十七八歲就應該有的見識</li>
    <li>別讓不好意思害了你</li>
</ul>
</body>
</html>
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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