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CSS制作三角箭头提示框

时间:2015-04-21 19:46来源:未知作者:user点击:
纯CSS制作三角箭头提示框


<!DOCTYPE html>
<html>
    <head>
        <title>Test</title>
		<style type="text/css">
/*
   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; /* 垂直居中 */
  color: white;
  text-align: center;
  border-radius: 10px;
  font-family: sans-serif;
}
 
.speech-bubble:after {
  content: '';
  position: absolute;
 
  width: 0;
  height: 0;
 
  border: 15px solid;
}
 
/* 箭头的位置 */
.speech-bubble-top:after {
  border-bottom-color: #292929;
  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>
        <div class="speech-bubble speech-bubble-top">
            箭头在顶部
        </div>
         <br/>
        <div class="speech-bubble speech-bubble-bottom">
            箭头在底部
        </div>
        <br/>
        <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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