<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.info {
margin-top: 50px;
position:relative;
width:500px;
height:250px;
line-height:60px;
background:#F6F1B3;
box-shadow:1px 2px 3px #E9D985;
border:1px solid #DACE7C;
border-radius:4px;
text-align:center;
color:red;
}
.nav {
position:absolute;
left:50px;
overflow:hidden;
width:0;
height:0;
border-width:10px;
border-style:solid dashed dashed dashed;
}
.nav-border {
top:-20px;
border-color:transparent transparent #DACE7C transparent;
}
.nav-background {
top:-19px;
border-color:transparent transparent #FFF transparent;
}
</style>
</head>
<body>
<div class="info">
<span>提示信息</span>
<div class="nav nav-border"></div>
<div class="nav nav-background"></div>
</div>
</body>
</html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.info {
margin-top: 50px;
position:relative;
width:500px;
height:250px;
line-height:60px;
background:#F6F1B3;
box-shadow:1px 2px 3px #E9D985;
border:1px solid #DACE7C;
border-radius:4px;
text-align:center;
color:red;
}
.nav {
position:absolute;
left:50px;
overflow:hidden;
width:0;
height:0;
border-width:10px;
border-style:solid dashed dashed dashed;
}
.nav-border {
top:-20px;
border-color:transparent transparent #DACE7C transparent;
}
.nav-background {
top:-19px;
border-color:transparent transparent #FFF transparent;
}
</style>
</head>
<body>
<div class="info">
<span>提示信息</span>
<div class="nav nav-border"></div>
<div class="nav nav-background"></div>
</div>
</body>
</html>