body{
	position: relative;
	max-width: 1920px;
    max-height: 1080px;
}

.container{
	position: relative;
	width: 100%;
	height: 1446px;
	background: url(../img/bg.jpg) no-repeat;
}
.down{
	position: absolute;
	top: 818px;
	left: 50%;
	width: 317px;
	height: 168px;
	transform: translateX(-50%);
	background: url(../img/btn.png) no-repeat;
}