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vertical-align各属性对比_html/css_WEB-ITnose

WBOY
Release： 2016-06-24 11:35:18
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测试用代码

<!DOCTYPE html><html><head>    <style>        #dd {            //line-height: 300px;            background-color: gray;            position: relative;            font-size: 60px;            //height: 300px;        }        #dd > .middle {            position: absolute;            top: 50%;            height: 1px;            background-color: black;            left: 0;            right: 0px;        }        #dd span {            background-color: green;        }    </style>  </head><body>    <div id="dd">        <img    style="max-width:90%" alt="vertical-align各属性对比_html/css_WEB-ITnose" ><span>xg</span>        <div class="middle"></div>    </div></body></html>
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默认的是按baseline对齐

去掉图片试试：

这里xg span的高度是60,68的高度是line-height,上图高72是图片把div撑开了，可以看出span的底部到baseline的距离是8

给img添加 vertical-align:bottom; 后：

图片和div的底边对齐

vertical-align:text-bottom

和对齐

vertical-align:sub;

和vertical-align:bottom;类似，但是更低一些

vertical-align:middle;

图片偏下了

将img的height改成1试一试

原来是跟x居中对齐了
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vertical-align各属性对比
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