css to implement arrows and prompt boxes with gaps
1. Implement the arrow as shown in the figure
##
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.out{
width: 200px;
height: 200px;
background: #f00;
position: relative;
}
.word{
position: absolute;
left: 60px;
line-height: 40px;
}
.triangle-out{
position: absolute;
top: 0px;
left: 0px;
width: 0px;
height: 0px;
display: block;
border-top: 20px solid #f00;
border-right: 20px solid #f00;
border-bottom: 20px solid #f00;
border-left: 40px solid #ff0;
}
.triangle-in{
position: absolute;
top: 0px;
left: 0px;
width: 0px;
height: 0px;
display: block;
border-top: 20px solid transparent;
border-right: 20px solid transparent;
border-bottom: 20px solid transparent;
border-left: 20px solid #f00;
}
</style>
</head>
<body>
<p class="out">
<span class="triangle-out"></span>
<span class="triangle-in"></span>
<span class="word">read more</span>
</p>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>带缺口的提示框-/</title>
<style>
.wrap{
font-size: 12px;
margin:40px auto;
width:600px;
}
.ui-slider-tooltip{
background:#FCFDFD;
border:1px solid green;
color:#222222;
display: block;
text-align: center;
padding: 5px 3px 5px 3px;
width: 190px;
position: relative;
}
.ui-corner-all {
-moz-border-radius-bottomleft:5px;
-moz-border-radius-bottomright:5px;
-moz-border-radius-topleft:5px;
-moz-border-radius-topright:5px;
-webkit-border-top-left-radius:5px 5px;
-webkit-border-top-right-radius:5px 5px;
-webkit-border-bottom-right-radius:5px 5px;
-webkit-border-bottom-left-radius:5px 5px;
}
.ui-tooltip-pointer-down {
border-bottom-width: 0;
border-left: 7px dashed transparent;
border-right: 7px dashed transparent;
border-top: 8px solid green;
bottom: -8px;
display: block;
height:0;
left: 50%;
margin-left: -7px;
position: absolute;
width:0;
}
.ui-tooltip-pointer-down-inner {
border-left: 6px dashed transparent;
border-right: 6px dashed transparent;
border-top: 7px solid #fff;
left: -6px;
top: -9px;
position: absolute;
}
.a{
display: block;width:0;height:0;
border-left: 7px dashed transparent;
border-right: 7px dashed transparent;
border-top: 8px solid green;
border-bottom: 0;
position: absolute;
}
.b{
position: absolute;
border-left: 6px dashed transparent;
border-right: 6px dashed transparent;
border-top: 7px solid #fff;
top: -9px;
left: -6px;
}
</style>
</head>
<body>
<p class="wrap">
<h1>用CSS实现带缺口的提示框</h1>
<span class="a">
<span class="b"></span>
</span>
<br/>
<span class="a">
<span class="b" style="top:-11px;"></span>
</span>
<br/>
<span class="ui-slider-tooltip ui-corner-all">
<span>带缺口提示框</span>
<span class="ui-tooltip-pointer-down">
<span class="ui-tooltip-pointer-down-inner" ></span>
</span>
</span>
<br/>
<span class="ui-slider-tooltip ui-corner-all" style="background: #f00">
<span>加个背景就可以看清原理啦</span>
<span class="ui-tooltip-pointer-down">
<span class="ui-tooltip-pointer-down-inner" ></span>
</span>
</span>
</p>
</p>
</body>
</html>Front-end engineers learn basic knowledge
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