.box .top {
    position: fixed;
    width: 8rem;
    height: 8rem;
    bottom: 8rem;
    right: 8rem;
    z-index: 1000;
    opacity: 0;
    transition: all 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.box .top:hover{
    background:rgba(241, 101, 34, 0.1);
}

.box .top img {
    width: 6.4rem;
    height: 6.4rem;
}

.block {
    opacity: 1 !important;
}