在线预览 源码下载
实现的代码。
css代码:
.arrow_box { position: relative; background: #88b7d5; border: 4px solid #c2e1f5;}.arrow_box:after, .arrow_box:before { bottom: 100%; left: 50%; border: solid transparent; content: " "; height: 0; width: 0; position: absolute; pointer-events: none;} .arrow_box:after { border-color: rgba(136, 183, 213, 0);[......] via:http://www.w2bc.com/article/css3-genetate-arrow-please
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