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

.fh5co-parallax {background-image:url(../images/shang2.jpg);}
}

@media screen and (max-width:810px){
.fh5co-parallax {background-image:url(../images/shang3.jpg);}
}

@media screen and (max-width:480px){
.fh5co-parallax {background-image:url(../images/shang4.jpg);}
}