.side-nav {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.498);
    border: 1.5px solid rgb(10, 154, 174);
    z-index: 1000;
    width: 80px;
    height: 80px;
    padding-top: 6.5px;
    border-radius: 5px 0 0 5px;
    transition: all 1s ;
    overflow: hidden;

}

.side-nav-item {
    text-align: center;
    color: white;
    cursor: pointer;
    padding: 2px;
font-size: 13px;
}

.side-nav:hover {
    width: 150px;
    height: 150px;
    overflow: hidden;
    padding-top: 0;

}
.side-nav:hover .side-nav-item {
    display: none;
}

.tb-img{
    display: none;
}
.side-nav:hover .tb-img {
    display: block;
}
.tb-img img {
	width: 100%;
    /* transform: scale(1.4); */
}