@media screen and (max-width:768px){
	#nav{display: none;}
	
}
@media screen and (min-width:769px){
	.myback{
		display: none;
	}
	#home_main{
		width: 1200px;
		margin: 20px auto;
		overflow: hidden;
	}
	.rencai{
		border: 1px solid #ccc;
		width: 790px;
		height: 600px;
		float: left;
		margin-bottom: 20px;
	}
	.zhaopin{
		border: 1px solid #ccc;
		width: 790px;
		height: 600px;
		float: left;
	}
	.ku{
		border: 1px solid #ccc;
		width: 390px;
		height: 1222px;
		float: right;
	}
	.head{
		width: 100%;
		height: 40px;
		background-color: #eee;
		display: flex;
		justify-content: space-between;
		align-items: center;
		padding:  0 20px;
		box-sizing: border-box;
	}
	
	
	
}