转载自: http://blog.sina.com.cn/s/blog_9fd5b6df01013mld.html
练习切图时发现img和父级div之间总是有2px空隙(chrome),上网搜索解决。
图片IMG与容器下边界之间有空隙怎么办?这里介绍3种简单的解决方法。
第一,给图片img标签display:block。
img{display:block}
第二,定义容器里的字体大小为0。
div{ width:110px; border:1px solid #000000; font-size:0px;}
第三,定义图片img标签vertical-align:bottom,vertical-align:middle,vertical-align:top
img{vertical-align:bottom}
其他还有把图片下边距设为负值和改写HTML标签的排列。我觉得前三种就完全可以解决了。
造成图片在IE下与容器下边界有空隙的原因在网上搜了一下,发现old9说的图片文字等inline元素默认是和父级元素的baseline对齐的,而baseline又和父级底边有一定距离(这个距离和 font-size,font-family 相关,不一定是 5px),所以设置 vertical-align:top/bottom/text-top/text-bottom 都可以避免这种情况出现。而且不光li,其他的block元素中包含img也会有这个现象。
至于HTML属性align="center"(对于图片浏览器会处理成align="middle"),就相当于vertical-align:middle; 所以道理也是一样的,只要vertical-align不取baseline,这个空隙就消失了。

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