.w {
		width: 1004px;
		/*margin: 140px auto;*/
	}
	.nav_menu {
		display: flex;
		justify-content: space-around;
		align-items: center;
		height: 50px;
		/* background-color: #4caf50; */
		/* border: 1px solid #ccc; */
		/*padding: 10px;*/
		color: #fff;
		
	}
	.menu_item {
		position: relative;
		flex: 1;
		height: 100%;
		line-height: 50px;
		text-align: center;
		transform-style: preserve-3d;
		transition: all 0.5s;
		/* margin: 0 5px; */
	}
	.menu_item:hover {
		cursor: pointer;
		transform: rotateX(90deg);
	}
	.home, .web_home {
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		perspective: 300px;
	}
	.home {
		/*background-color: #4caf50;*/
    background-color: #2282CE;
		z-index: 11;
		transform: translateZ(25px);
	}
	.home a{
		color:white;
	}
	.web_home {
		/*background-color: #009688;*/
    background-color: #2282C0;
		transform: translateY(25px) rotateX(-90deg);
	}
	.web_home a{
		color:white;
	}