| 123456789101112131415161718192021222324252627282930313233343536373839404142434445 | <!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title>    <style>        #top {            position: absolute;            width: 0px;            height: 0px;            line-height: 0px; /*为了防止ie下出现题型*/            border-bottom: 10px solid #89b007;            border-left: 10px solid #fff;            border-right: 10px solid #fff;            left: 76px;            top: -10px;        }        #first {            border-radius: 8px;            position: absolute;            height: 150px;            width: 300px;            background: #89b007;            left: 22px;            top: 33px;        }        #first p {            padding: 10px;            line-height: 1.5;            color: #FFF;        }    </style></head><body><div id="first">    <p>带背景颜色的小三角实现是比较简单的!</p>    <span id="top"></span></div></body></html>
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