.air-banner{background-image:url(./air_banner_left.dc3593f6.png),url(./air_banner_right.13ac69e3.png),url(./air_banner.4ba8e2f4.png);background-position:0 0,100% 100%,50%;background-repeat:no-repeat;background-size:140px 60px,140px 60px,100% 100%}