实现如图效果的背景图
将背景切片为head、body、foot三个png
head.png高度73px
body.png高度1px
foot.png高度69px
/*背景图片*/
background: url(~@/assets/head.png) no-repeat center
top/100% 73px,
url(~@/assets/body.png) no-repeat center 73px/100%
calc(100% - 73px - 69px),
url(~@/assets/foot.png) no-repeat center bottom/100%
69px;