.top_big_div {
				margin-top: 8%;
				width: 80%;
				margin-left: 10%;
				height: auto;
			}
			.head{
				width: 30px;
				height: 30px;
				border-radius: 50%;
			}
			#top{
				width: 100%;
				height: 710px;
				background-image: url(../../imgs/zydkbackgroundimg.jpg);
				margin-top: 2%;
				padding-top: 3%;
				display: flex;
			}
			
			.top_left{
				width: 50%;
				height: 80%;
				margin-left: 10%;
				padding-top: 10%;
			}
			.top_left_bottom button{
				width: 40%;
				border: 1px solid #C59B6D;
				background: #C59B6D;
				color: white;
				height: 40px;
				border-radius: 10px;
			}
			.top_left_bottom button a{
				color: white;
				font-size: 12px;
			}
			.top_left_bottom button:last-child{
				margin-left: 9%;
			}
			.top_right{
				margin-left: 40%;
				padding-bottom: 5%;
			}
			.big_div_botoom{
				display: flex;
				margin-top: 2%;
			}
			.big_div_botoom div:first-child{
				width: 100%;
			}
			/*.big_div_botoom div:last-child{
				width: 25%;
				border: 1px solid #C59B6D;
				background: #C59B6D;
				width: 30%;
				text-align: center;
				padding-top: 7%;
			}
			.big_div_botoom div:last-child span{
				color: white;
				font-size: 18px;
			}
			.big_div_botoom div:last-child button{
				width: 100px;
				height: 40px;
				border: 1px solid white;
				border-radius: 10px;
				background-color: #C59B6D;
				color: white;
				margin-top: 5%;
			}*/
			.footer{
				margin-top: 10%;
			}
			.app_content{
				display: none;
			}
			.app_top{
				display: none;
			}
			.app_big_div{
				display: none;
			}
			.big_div{
				width: 80%;
				margin-left: 10%;
			}
			@media only screen and (min-width: 100px) and (max-width: 640px) {
			.big_div{
				display: none;
			}
			.app_top{
				display: block;
			}
			.top_big_div{
				margin-top: 160px;
			}
			.app_content{
				display: block
			}
			.top_left_top{
				display: none;
			}
			
			.app_big_div{
				width: 90%;
				margin-left: 5%;
				display: block;
			}
			.top_left{
				display: none;				
			}
			.top_right img{
				display: none;
			}
			.top_big_div h2 img{
				width: 20%;
			}
			.top_big_div h2{
				font-size: 18px;
			}
			#top{
				display: none;
			}
			.app_top_left button{
				width: 49%;
				border: 1px solid #C59B6D;
				background: #C59B6D;
				color: white;
				height: 40px;
				border-radius: 10px;
			}
			.app_top_left button a{
				color: white;
			}
			.app_top{
				width: 90%;
				margin-left: 5%;
			}
			.app_top_right{
				text-align: center;
			}
		}