.middle-img {
		position: absolute;
		left: 259px;
		top: 0px;
		width: 40px;
	}

	.up-img {
		position: absolute;
		top: -40px;
		left: 261px;
		width: 40px;
	}

	.down-img {
		position: absolute;
		top: 40px;
		left: 257px;
		width: 40px;
	}

	.left-img {
		position: absolute;
		left: 218px;
		width: 40px;
	}

	.right-img {
		position: absolute;
		left: 300px;
		width: 40px;
	}
	@media screen and (max-width:450px) {
		.middle-img {
			position: absolute;
			left: 259px;
			top: 0px;
			width: 40px;
			display: none;
		}

		.up-img {
			position: absolute;
			top: -40px;
			left: 261px;
			width: 40px;
			display: none;
		}

		.down-img {
			position: absolute;
			top: 40px;
			left: 257px;
			width: 40px;
			display: none;
		}

		.left-img {
			position: absolute;
			left: 218px;
			width: 40px;
			display: none;
		}

		.right-img {
			position: absolute;
			left: 300px;
			width: 40px;
			display: none;
		}

		.rotate_jia{
			display: none;
		}.rotate_div{
			display: none;
		}.rotate_jian{
			display: none;
		}
	}