@media screen and (max-width:1024px){

.fh5co-parallax .image2 {background-image:url(../images/4shang.jpg);}
}

@media screen and (max-width:810px){
.fh5co-parallax .image2 {background-image:url(../images/2shang.jpg);}
}

@media screen and (max-width:480px){
.fh5co-parallax .image2 {background-image:url(../images/1shang.jpg);}
}