#scroll_to_top{
    position: fixed;
    right: 35px;
    bottom: 50px;
    z-index: 9;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 5px;
    width: 38px;
    height: 38px;
    color: #000;
    text-align: center;
    background-color: #fff;
    font-size: 22px;
    line-height: 1.3;
    visibility: hidden;
    opacity: 0;
    transition: 0.2s linear;
    text-decoration: none;
    &:hover{
        color: #ffff00;
    }
    &.active{
        opacity: 1;
        visibility: visible;
    }
}