CSS制作三角边框
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>字符制作三角边框</title>
<style type="text/css">
*{margin:0;padding:0;}
body{font-family:SimSun;}
h1{text-align:center;}
.demo1{
width:100px;
margin:20px auto;
border:1px solid red;
height:100px;
}
.demo1 em,.demo1 span
{
display:block;
width:30px;
height:15px;
font-size:30px;
overflow:hidden;
_position:relative;
margin-left:20px;
}
.demo1 em{
margin-top:-16px;
color:red;
font-style:normal;
}
.demo1 span
{
margin-top:-14px;
color:white;
}
.demo2{
width:300px;
border:1px solid #F00;
height:100px;
position:relative;
margin-left:auto;
margin-right:auto;
}
.demo2 em,.demo2 span{
font-style:normal;font-size:30px;position:absolute;left:-16px;top:40px;color:red;}
.demo2 span{
left:-14px;
color:white;
}
/*
对话气泡
用法:使用.speech-bubble和.speech-bubble-DIRECTION类
<div class="speech-bubble speech-bubble-top">Hi there</div>
*/
.speech-bubble {
position: relative;
background-color: #292929;
width: 200px;
height: 150px;
line-height: 150px;
color: white;
border-radius: 10px;
font-family: sans-serif;
}*/
.speech-bubble:after {
content: ‘‘;
position: absolute;
width: 0;
height: 0;
border: 15px solid
}
.speech-bubble-top:after {
border-bottom-color:#0000FF;
left: 50%;
bottom: 100%;
margin-left: -15px;
}
.speech-bubble-right:after {
border-left-color: #292929;
left: 100%;
top: 50%;
margin-top: -15px;
}
.speech-bubble-bottom:after {
border-top-color: #292929
top: 100%;
left: 50%;
margin-left: -15px;
}
.speech-bubble-left:after {
border-right-color: #292929;
top: 50%;
right: 100%;
margin-top: -15px;
}
</style>
</head>
<body>
<h1>demo1 是用 margin 方法</h1>
<div class="demo1">
<em>◆</em>
<span>◆</span>
</div>
<h1>demo2 是用 position 方法</h1>
<div class="demo2">
<em>◆</em>
<span>◆</span>
</div>
<div class="speech-bubble speech-bubble-top">
</div>
<div class="speech-bubble speech-bubble-bottom">
箭头在底部
</div>
<div class="speech-bubble speech-bubble-left">
箭头在左侧
</div>
<br/>
<div class="speech-bubble speech-bubble-right">
箭头在右侧
</div>
</body>
</html>
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