.tcom-back-to-top.is-on {
    transition: opacity 0.5s ease 0s, bottom 0s linear 0s;
}
.is-scrolling .tcom-back-to-top {
    opacity: 0.3;
}
.tcom-back-to-top.is-on {
    bottom: 40px;
    opacity: 1;
    position: fixed;
}
.tcom-back-to-top {
    backface-visibility: hidden;
    transition: opacity 0.5s ease 0s, bottom 0s linear 0.5s;
    transition: color 0.4s ease 0s;
}
.tcom-back-to-top:hover{
    opacity: 1;
    background-color:#fff ;
    transform: scale(1.1);
}
.tcom-back-to-top:hover svg g {
    fill:#000 ;
}
.tcom-back-to-top {
    bottom: 10px;
    cursor: pointer;
    display: block;
    height: 40px;
    padding: 5px;
    position: fixed;
    left: 10px;
    text-align: center;
    width: 40px;
    background-color:#000;
    z-index: 799;
    border: 1px solid #CCC;
    z-index: 999999999999999999999999999999999999999999;
}