@media screen and (min-width:481px){none}.box-img{width:100%;vertical-align:bottom}.box-img:hover{filter:opacity(70%);cursor:pointer}@media screen and (min-width:500px){header{position:fixed;width:100%;top:0;z-index:10000}#container{padding-top:150px}.box-img{width:100%;vertical-align:bottom}.box-img:hover{filter:opacity(70%);cursor:pointer}