.wrapper {overflow: hidden;}
.wrapper .left_box {float: left; box-sizing: border-box; width: 50%; padding-right: 2%;}
.wrapper .right_box {float: right; box-sizing: border-box; width: 40%;}
.wrapper .right_box img {border: 1px solid #ececec; width: 60%;}
.wrapper .right_box img:last-child {width: 35%;}

@media (max-width:720px) {
	.wrapper .left_box {width: 100%;}
	.wrapper .right_box {display: none;}
}