#back-to-top {
	background-color: #2c7fe4;
}

#back-to-top:hover {
	background-color: rgba(44,127,228,.5);
}

#back-to-top a {
	color: transparent;
	background-color: transparent;
}

#back-to-top a .icon {
	border-bottom-color: #fff;
	border-left-color: transparent;
	border-right-color: transparent;
}

#back-to-top:hover a .icon {
	border-bottom-color: rgba(255,255,255,.7);
}