用CSS实现无图片圆角框
做圆角框比较常见的做法是切割图片法。这样可以产生随心所欲的效果。但是如果要求比较简单，没有时间来割图，是否有更简单的方法呢？答案是肯定的。我们可以用css来达到一定效果。这种方法优点是速度快，而且随时可以变化颜色。缺点是效果比较单调。
把下面的html保存起来就可以了。在IE,firefox下都可以正确显示
<html>
<head>
<title>
Rounded Box Demo
</title>
<style type="text/css">
body {
background-color: #FFF;
margin: 0px;
padding: 0px;
font-size: 16px;
font-family: Georgia;
}
div.rounded-box {
position:relative;
width: 9em;
background-color: #C0C0C0;
margin: 3px;
}
/*********************
GLOBAL ATTRIBUTES
*********************/
div.top-left-corner, div.bottom-left-corner, div.top-right-corner, div.bottom-right-corner
{position:absolute; width:20px; height:20px; background-color:#FFF; overflow:hidden;}
div.top-left-inside, div.bottom-left-inside, div.top-right-inside, div.bottom-right-inside {position:relative; font-size:150px; font-family:arial; color:#C0C0C0; line-height: 40px;}
/*********************
SPECIFIC ATTRIBUTES
*********************/
div.top-left-corner { top:0px; left:0px; }
div.bottom-left-corner {bottom:0px; left:0px;}
div.top-right-corner {top:0px; right:0px;}
div.bottom-right-corner {bottom: 0px; right:0px;}
div.top-left-inside {left:-8px;}
div.bottom-left-inside {left:-8px; top:-17px;}
div.top-right-inside {left:-25px;}
div.bottom-right-inside {left:-25px; top:-17px;}
div.box-contents {
position: relative; padding: 8px; color:#000;
}
</style>
</head>
<body>
<div class="rounded-box">
<div class="top-left-corner"><div class="top-left-inside">•</div></div>
<div class="bottom-left-corner"><div class="bottom-left-inside">•</div></div>
<div class="top-right-corner"><div class="top-right-inside">•</div></div>
<div class="bottom-right-corner"><div class="bottom-right-inside">•</div></div>
<div class="box-contents">
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
</div> <!-- end div.box-contents -->
</div> <!-- end div.rounded-box -->
</body>
</html>
把下面的html保存起来就可以了。在IE,firefox下都可以正确显示
<html>
<head>
<title>
Rounded Box Demo
</title>
<style type="text/css">
body {
background-color: #FFF;
margin: 0px;
padding: 0px;
font-size: 16px;
font-family: Georgia;
}
div.rounded-box {
position:relative;
width: 9em;
background-color: #C0C0C0;
margin: 3px;
}
/*********************
GLOBAL ATTRIBUTES
*********************/
div.top-left-corner, div.bottom-left-corner, div.top-right-corner, div.bottom-right-corner
{position:absolute; width:20px; height:20px; background-color:#FFF; overflow:hidden;}
div.top-left-inside, div.bottom-left-inside, div.top-right-inside, div.bottom-right-inside {position:relative; font-size:150px; font-family:arial; color:#C0C0C0; line-height: 40px;}
/*********************
SPECIFIC ATTRIBUTES
*********************/
div.top-left-corner { top:0px; left:0px; }
div.bottom-left-corner {bottom:0px; left:0px;}
div.top-right-corner {top:0px; right:0px;}
div.bottom-right-corner {bottom: 0px; right:0px;}
div.top-left-inside {left:-8px;}
div.bottom-left-inside {left:-8px; top:-17px;}
div.top-right-inside {left:-25px;}
div.bottom-right-inside {left:-25px; top:-17px;}
div.box-contents {
position: relative; padding: 8px; color:#000;
}
</style>
</head>
<body>
<div class="rounded-box">
<div class="top-left-corner"><div class="top-left-inside">•</div></div>
<div class="bottom-left-corner"><div class="bottom-left-inside">•</div></div>
<div class="top-right-corner"><div class="top-right-inside">•</div></div>
<div class="bottom-right-corner"><div class="bottom-right-inside">•</div></div>
<div class="box-contents">
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
Text goes here<br>
</div> <!-- end div.box-contents -->
</div> <!-- end div.rounded-box -->
</body>
</html>