如何使用伪元素添加响应图像

Question

我尝试使用图像和css伪元素添加框阴影和渐变边框.

我试过那段代码:

.box:before {
    content: url('box-shadow.png');
    position: absolute;
    width: auto;
    height: auto;
    max-width: 100%;
    z-index: -1;
    bottom: -9px;
    line-height: 0;
}
.box:after {
    content: url('box-border.png');
    position: absolute;
    width: auto;
    height: auto;
    max-width: 100%;
    bottom: -5px;
    right: 0px;
}

但是,当父div调整大小时,添加的图像不会调整大小,而是通过手动添加图像来调整大小.

看到那个小提琴http://jsfiddle.net/5TG3E/2/

Answer 1

我尝试从我身边可能会帮助你.像这样写:

.box:after {
    content:'';
    position: absolute;
    z-index: -1;
    bottom: -9px;
    margin: 0 auto;
    top:0;
    left:0;
    right:0;
    background:url('http://dl.dropbox.com/u/4812171/box-shadow.png') no-repeat bottom center;
    -moz-background-size:100% 9px;
    background-size:100% 9px;
}
.box:before {
    content:'';
    position: absolute;
    bottom: 0px;
    right: 0px;
    left:0;
    top:0;
    background:url('http://dl.dropbox.com/u/4812171/box-border.png') no-repeat bottom right;
}

检查这个http://jsfiddle.net/5TG3E/6/