@charset "utf-8";
 
main { background: url('../img/sub3/4/image1.jpg') no-repeat center/cover; } 

.facility-info .content-box> :first-child { background-image: url('../img/sub3/4/image2.jpg');} 

.facility-details .content-box> :first-child { background-image: url('../img/sub3/4/image3.jpg');} 
.facility-details .content-box> :last-child> :first-child { background-image: url('../img/sub3/4/image4.jpg');} 
.facility-details .content-box> :last-child> :last-child { background-image: url('../img/sub3/4/image1.jpg');}