background问题

1.如果是小图的背景图

background: url("@{images-dir}/homepage/our_pro_2x.png") no-repeat 0 0;

background-size:200% 800%;

 

2.大图背景图

background: url("@{images-dir}/homepage/industry/industry_travel_img_01_2x.jpg") no-repeat center bottom;