.water_box{position: relative;}
.water_box div{;width:300px;display:none;}
.water_box2 div{width:300px;display:none;}
.water_box img{width:300px;}

@media only screen and (max-width:480px) {
.water_box div{;width:100%!important;display:none;}
.water_box2 div{width:100%!important;display:none;}
.water_box img{width:100%!important;}
}