使 div 的顶部和底部边框具有锯齿状边缘

Question

在 div 上制作这样的边框的最佳方法是什么？它只需要在现代浏览器中工作，并且在 IE10 之下没有任何东西。我一直在研究使用边框图像，但这似乎有点偏离它如何呈现底部边框以及它如何延伸到 div 的宽度。使用重复的背景图像我认为也行不通，因为容器的高度可以增长。谢谢你的帮助！

Answer 1

检查这个适用于所有浏览器的 jsfiddle

编辑

http://jsfiddle.net/yKPe9/3/

.header:after, .footer:after {
    content: " ";
    display:block;
    position: relative;
    top:0px;
    left:0px;
    width:100%;
    height:36px;
    background: linear-gradient(#2B3A48 0%, transparent 0%), linear-gradient(135deg, #272220 33.33%, transparent 33.33%) 0 0%, #272220 linear-gradient(45deg, #272220 33.33%, #2B3A48 33.33%) 0 0%;
    background: -webkit-linear-gradient(#2B3A48 0%, transparent 0%), -webkit-linear-gradient(135deg, #272220 33.33%, transparent 33.33%) 0 0%, #272220 -webkit-linear-gradient(45deg, #272220 33.33%, #2B3A48 33.33%) 0 0%;
    background: -o-linear-gradient(#2B3A48 0%, transparent 0%), -o-linear-gradient(135deg, #272220 33.33%, transparent 33.33%) 0 0%, #272220 -o-linear-gradient(45deg, #272220 33.33%, #2B3A48 33.33%) 0 0%;
    background: -moz-linear-gradient(#2B3A48 0%, transparent 0%), -moz-linear-gradient(135deg, #272220 33.33%, transparent 33.33%) 0 0%, #272220 -moz-linear-gradient(45deg, #272220 33.33%, #2B3A48 33.33%) 0 0%;
        background: -ms-linear-gradient(#2B3A48 0%, transparent 0%), -ms-linear-gradient(135deg, #272220 33.33%, transparent 33.33%) 0 0%, #272220 -ms-linear-gradient(45deg, #272220 33.33%, #2B3A48 33.33%) 0 0%;
    background-repeat: repeat-x;
    background-size: 0px 100%, 9px 27px, 9px 27px;
}

.main
{
    height:200px;
    padding: 36px 0;
    box-sizing:border-box;
   background-color:#2B3A48; 
}
.flip-vertical {
    -moz-transform: scaleY(-1);
    -webkit-transform: scaleY(-1);
    -o-transform: scaleY(-1);
    transform: scaleY(-1);
    -ms-filter: flipv; /*IE*/
    filter: flipv; /*IE*/
}