image-set实现Retina屏幕下图片显示

// 淘宝retina视网膜显示，css4图片新写法
.image{background: url(//img.alicdn.com/tps/i3/TB148SbHXXXXXcfXpXXyTkXLpXX-500-444.png);background-image: -webkit-image-set(url(//img.alicdn.com/tps/i3/TB148SbHXXXXXcfXpXXyTkXLpXX-500-444.png) 1x,url(//img.alicdn.com/tps/i4/TB1nIyfHXXXXXbCXXXXsH1j1pXX-1000-888.png) 2x);background-image: -moz-image-set(url(//img.alicdn.com/tps/i3/TB148SbHXXXXXcfXpXXyTkXLpXX-500-444.png) 1x,url(//img.alicdn.com/tps/i4/TB1nIyfHXXXXXbCXXXXsH1j1pXX-1000-888.png) 2x);background-image: -ms-image-set(url(//img.alicdn.com/tps/i3/TB148SbHXXXXXcfXpXXyTkXLpXX-500-444.png) 1x,url(//img.alicdn.com/tps/i4/TB1nIyfHXXXXXbCXXXXsH1j1pXX-1000-888.png) 2x);background-image: -o-image-set(url(//img.alicdn.com/tps/i3/TB148SbHXXXXXcfXpXXyTkXLpXX-500-444.png) 1x,url(//img.alicdn.com/tps/i4/TB1nIyfHXXXXXbCXXXXsH1j1pXX-1000-888.png) 2x);background-repeat: no-repeat;_background-image: url(//img.alicdn.com/tps/i2/TB1dpR8HXXXXXa2XVXXyTkXLpXX-500-444.png);}

走向视网膜（Retina）的Web时代