#l_container{position:relative;z-index:10;overflow:hidden;width:75rem;min-height:100vh;margin:0 auto;box-shadow:0 0 5rem rgba(0,0,0,.2)}
.pcHide{display:none}
.spHide{display:block}
@media screen and (max-width:750px){
#l_container{width:100%}
.pcHide{display:block}
.spHide{display:none}
}