@-webkit-keyframes bt-slideUpEffect {
	0% {
		-webkit-transform: translateY(100px);
		-ms-transform: translateY(100px);
		transform: translateY(100px); 
	}
	100% {
		-webkit-transform: translateY(0);
		-ms-transform: translateY(0);
		transform: translateY(0); 
	} 
}
@keyframes bt-slideUpEffect {
	0% {
		-webkit-transform: translateY(100px);
		-ms-transform: translateY(100px);
		transform: translateY(100px); 
	}
	100% {
		-webkit-transform: translateY(0);
		-ms-transform: translateY(0);
		transform: translateY(0); 
	}
}

#site_backtop {
	position: fixed;
    right: 30px;
	bottom: 50px;
	width: 40px;
    height: 40px;
	font-size: 16px;
	font-weight: 400;
    line-height: 38px;
	text-align: center;
    outline: medium none;
	color: #333;
    background: #ffffff;
    border: 1px solid #1c1c1c;
    cursor: pointer;
    display: none;
    z-index: 999;
    -webkit-transition: all 0.4s ease 0s;
    -ms-transition: all 0.4s ease 0s;
    transition: all 0.4s ease 0s;
}
#site_backtop.rounded{
	-webkit-border-radius: 5px;
	border-radius: 5px;
}
#site_backtop.circle{
	-webkit-border-radius: 50%;
	border-radius: 50%;
}
#site_backtop:hover{
	color: #ffffff;
	background: #00abc9;
	border-color: #00abc9;
}
#site_backtop.active {
	display: block;
	-webkit-animation: bt-slideUpEffect 1.2s both;
	-ms-animation: bt-slideUpEffect 1.2s both;
	animation: bt-slideUpEffect 1.2s both;
}