/* PC¹öÀü */
#container > .inner img.img_tab, #container > .inner img.img_mob {display:none}
@media screen and (max-width: 640px) {
.outer_pc {position:relative;display: none; } 
} 

/* ¸ð¹ÙÀϹöÀü */
@media screen and (min-width: 640px) {
.outer_mobile {position:relative;display: none;} 
}