CSS设置宽高后图片变模糊的解决办法

写博客的时候偶尔发现，明明图片清晰度足够，但是通过CSS设置宽度和高度后图片就变模糊了，使用如下CSS设置可解决这个问题。

image-rendering: -moz-crisp-edges; /* Firefox */     
image-rendering: -o-crisp-edges; /* Opera */      
image-rendering: -webkit-optimize-contrast; /*Webkit (non-standard naming) */
image-rendering: crisp-edges; 
-ms-interpolation-mode: nearest-neighbor; /* IE (non-standard property) */
}
img {    
image-rendering: -moz-crisp-edges; /* Firefox */     
image-rendering: -o-crisp-edges; /* Opera */      
image-rendering: -webkit-optimize-contrast; /*Webkit (non-standard naming) */
image-rendering: crisp-edges; 
-ms-interpolation-mode: nearest-neighbor; /* IE (non-standard property) */
}