#Download {
	width: 1230px;
	height: 107px;
	text-align: center;
	position: absolute;
	top: 870px;
	left: 50%;
	margin-left: -480px;
	z-index: 51;
	border-radius: 5px;
}

#Download .btn_down_s1 {
	float: left;
	width: 405px;
	height: 176px;
	text-indent: -999em;
	margin-right: 152px;
	animation: sc 2s infinite linear;
	background: url(../images/a1.png) no-repeat left top;
}

#Download .btn_down_s2 {
	float: left;
	width: 405px;
	height: 176px;
	text-indent: -999em;
	margin-left: 10px;
	animation: sc 2s infinite linear;
	background: url(../images/a2.png) no-repeat left top;
}

@keyframes sc {
	0% {
		transform: scale(1);
	}

	50% {
		transform: scale(0.8);
	}

	100% {
		transform: scale(1);
	}
}