.nav .new,
			.wapnava .new,
			.nava.bbs {
				display: flex;
				align-items: center;
			}
			.nava.bbs .icon {
				width: 20px;
				height: 20px;
				margin-right: 6px;
				background-position: center;
				background-repeat: no-repeat;
				background-size: cover;
				border-radius: 2px;
				image-rendering: -webkit-optimize-contrast;
				display: none;
			}
			.wapnava .new .icon,
			.nav .new .icon {
				width: 28px;
				height: 28px;
				margin-right: 4px;
				image-rendering: -webkit-optimize-contrast;
			}
			.navigation span:nth-child(3) a{
				/* color: #ff5200;
				font-weight: bold; */
			}
			.nav span .cheap {
				color: #ff5200;
			}
			.nav span:hover .cheap {
				color: #ff5200;
			}
			.nav .cheap_tips {
				position: absolute;
				top: 8px;
				left: -4px;
				white-space: nowrap;
				padding: 1px 3px 2px;
				background-color: #ff5200;
				border-radius: 3px;
				color: #fff;
				font-size: 12px;
				animation: moveUpDown 1s infinite;
				-webkit-animation: moveUpDown 1s infinite;
			}
			.nav .cheap_tips::after {
				content: '';
				display: block;
				position: absolute;
				bottom: -8px;
				left: 42px;
				width: 0;
				height: 0;
				border: 4px solid;
				border-color: #ff5200 transparent transparent;
			}

			@-webkit-keyframes moveUpDown {
				25% {
					top: 7px;
				}
				50% {
					top: 6px;
				}
				75% {
					top: 5px;
				}
				100% {
					top: 6px;
				}
			}

			@keyframes moveUpDown {
				25% {
					top: 7px;
				}
				50% {
					top: 6px;
				}
				75% {
					top: 5px;
				}
				100% {
					top: 6px;
				}
			}

		

	.i1 {
		padding-top: 40px;
	}
	.i1ba img {
		-webkit-filter: grayscale(100%);
		-moz-filter: grayscale(100%);
		-ms-filter: grayscale(100%);
		-o-filter: grayscale(100%);
		filter: grayscale(100%);
		filter: gray;
	}
	.i1ba img:hover {
		-webkit-filter: grayscale(0%);
		-moz-filter: grayscale(0%);
		-ms-filter: grayscale(0%);
		-o-filter: grayscale(0%);
		filter: grayscale(0%);
		filter: gray;
	}
	.index-desc {
		width: 71%;
		margin-left: auto;
		margin-right: auto;
		text-align: left;
		color: #424251;
	}
	.i1timg video,
	.i1timg img {
		display: block;
		margin-left: auto;
		margin-right: auto;
		margin-top: -1px;
	}
	.i1timg video {
		position: relative;
		max-width: 90%;
		z-index: 10;
		border-radius: 0px 0px 10px 10px;
	}
	.evaluation .item {
		width: 240px;
		font-size: 16px;
		color: #909793;
	}
	.evaluation .icon {
		width: 85px;
		margin: 0 auto 2px;
	}
	.install-number {
		display: flex;
		align-items: flex-end;
		justify-content: center;
		font-size: 20px;
	}
	.install-number span {
		font-size: 24px;
		color: #20a53a;
	}
	@media only screen and (max-width: 1399px) {
		.evaluation .item,
		.install-number {
			font-size: 15px;
		}
		.install-number span {
			font-size: 20px;
		}
		.index-desc {
			width: 75%;
			font-size: 17px;
		}
	}
	@media only screen and (max-width: 1299px) {
		.evaluation .item,
		.install-number {
			font-size: 15px;
		}
		.install-number span {
			font-size: 20px;
		}
		.index-desc {
			width: 79%;
			font-size: 16px;
			text-align: center;
		}
	}

	@media only screen and (max-width: 1199px) {
		.evaluation .icon {
			width: 75px;
		}
		.evaluation .item,
		.install-number {
			font-size: 15px;
		}
		.install-number span {
			font-size: 20px;
		}
		.index-desc {
			width: 90%;
			font-size: 14px;
			text-align: center;
		}
	}
	@media only screen and (max-width: 950px) {
		.evaluation {
			display: none;
		}
		.evaluation .item,
		.install-number {
			font-size: 14px;
		}
		.evaluation .item {
			width: auto;
			flex: 1;
		}

		.evaluation .icon {
			width: 60px;
		}
		.install-number span {
			font-size: 16px;
		}

		.index-desc {
			width: 100%;
			color: #666;
			line-height: 24px;
		}
	}
	@media only screen and (max-width: 799px) {
		.index-desc {
			width: 100%;
			font-size: 12px;
		}
	}