.to-top {
width: 2rem;
height: 5rem;
position: fixed;
bottom: -5rem;
border-radius: 50%;
left: 2rem;
z-index: 10;
}

.to-top a::before {
content: "";
position: absolute;
background-size: contain;
background-image: url(/assets/images/zai-new/top-to.svg);
background-repeat: no-repeat;
width: 2rem;
height: 5rem;
}

@media (min-width: 820px) {
.to-top a::before {
width: 3rem;
height: 7rem;
}

.to-top {
left: calc(50% - 50px);
}
}

@media (min-width: 1280px) {

.fot-menu {
position: fixed;
bottom: -13rem;
z-index: 10;

}
}