.to_top{align-items:center;justify-content:center;visibility:hidden;position:fixed;top:60%;right:15px;width:50px;height:50px;z-index:3;opacity:1;color:#fff;cursor:pointer;border:2px solid #fff;transition:top 1s ease}
.to_top i{font-weight:bolder;font-style:normal;font-variant:normal;text-rendering:auto;line-height:1;font-size:35px}
.to_top.white_to_top{color:#ff8200;border:2px solid #ff8200}
@media only screen and (max-width:576px){.to_top{top:80%}
}