@media only screen and (min-width: 767px) and (max-width: 1000px) {
	.hienthi{ display: block; }
	.khonghienthi{ display: none; }
	.class_mobile_position{
		position: absolute;
		z-index: -1;
	}
	.container_main{
		width: 100%;
		margin:0 auto;
	}	
	.banner_top{
		height: 100px;
		width: 100%;
		text-align: center;
	}
	.banner_top img{
		height: 100%;
	}
}