.sub-page{background:#f7f7f7; display:flex; border-top:1px solid #e8e8e8; padding:0;}
.sub-page__menu{width:300px;}
.sub-page__content{padding:70px; background:#fff; width:1400px; border-left:1px solid #e4e4e4;}

@media screen and (max-width:1400px){
	.sub-page{flex-wrap:wrap;}
	.sub-page__menu{width:100%;}
	.sub-page__content{width:100%; padding:20px; padding-top: 43px;}
}