#back-top a {
	width: 40px;
	display: block;
	text-align: center;
	font: 11px/100% Arial, Helvetica, sans-serif;
	text-transform: uppercase;
	text-decoration: none;
	color: #bbb;
		/* transition */
	-webkit-transition: 1s;
	-moz-transition: 1s;
	transition: 1s;
}
#back-top a:hover {
	color: #e12525;
}
	/* arrow icon (span tag) */
#back-top span {
	width: 40px;
	height: 40px;
	display: block;
	margin-bottom: 7px;
	background: url(../img/up-arrow.png) no-repeat center center;
		/* rounded corners */
	-webkit-border-radius: 15px;
	-moz-border-radius: 15px;
	border-radius: 15px;
		/* transition */
	-webkit-transition: 1s;
	-moz-transition: 1s;
	transition: 1s;
}
#back-top a:hover span {
	background: url(../img/up-arrow-hover.png) no-repeat center center;
}


@media only screen and (min-width: 768px) { 
#back-top {
	position: fixed;
	bottom: 30px;
	right: 15px;
	z-index: 999;
}
}

@media only screen and (max-width: 767px){
#back-top {
    float: right;
    width: 60px;
    z-index: 999;
}

}