/* tablet */
@media screen and (min-width:768px) and (max-width:991px){
}

/* mobile */
@media screen and (max-width:767px){
    .intro_ban a.ban1{left:20px; width:90%; max-width:280px; top:160px;}
    .intro_ban a.ban2{width:90%; right:20px; max-width:280px; top:300px;}
}