.mypresta_scrollup{
    width: 36px;
    height: 36px;
    position:fixed;
    display:none;
	right: 16px;
	bottom: 16px;
	opacity: 0.86;
	background: #475363;
	color: #fff;
	z-index: 10000;
}
.mypresta_scrollup i{
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	font-size: 24px;
}
@media (min-width: 768px){
	.mypresta_scrollup{
		display: none !important;
	}
}