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border-radius如何给元素添加圆角边框 border-radius给元素添加圆角边框方法

时间:2022-06-25 14:09:01 编辑:袖梨 来源:一聚教程网

本篇文章小编给大家分享一下border-radius给元素添加圆角边框方法,小编觉得挺不错的,现在分享给大家供大家参考,有需要的小伙伴们可以来看看。

border-radius:10px; /* 所有角都使用半径为10px的圆角 */

border-radius: 5px 4px 3px 2px; /* 四个半径值分别是左上角、右上角、右下角和左下角,顺时针 */

不要以为border-radius的值只能用px单位,你还可以用百分比或者em,但兼容性目前还不太好。

实心上半圆:

方法:把高度(height)设为宽度(width)的一半,并且只设置左上角和右上角的半径与元素的高度一致(大于也是可以的)。

css;">div{   
  
  /*是width的一半*/     
     
  background:#9da;     
  border-radius:50px 50px 0 0;/*半径至少设置为height的值*/     
  }  

实心圆:

方法:把宽度(width)与高度(height)值设置为一致(也就是正方形),并且四个圆角值都设置为它们值的一半。

如下代码:

div{   
  /*与width设置一致*/    
     
   background:#9da;   
   border-radius:50px;/*四个圆角值都设置为宽度或高度值的一半*/    
  } 

完整代码

  
  
  
  
border-radius</www.dztcsd.com/title>  
<style type="text/css">  
div.circle{   
    /*与width设置一致*/   
       
    background:#9da;   
    border-radius:50px;/*四个圆角值都设置为宽度或高度值的一半*/   
    }   
/*任务部分*/      
div.semi-circle{    
       
       
    background:#9da;   
    border-radius:?;   
    }   
      
</style>  
</head>  
<body>  
<div class="circle">  
</div>  
<br/>  
<!--任务部分-->  
<div class="semi-circle">  
</div>  
  
</body>  
</html></pre>                    


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