.sidenav {
    height: 100%;
    width: 10%;
    text-align: center;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    color: #ffffff;
    background-color: #31a169;
    overflow-x: hidden;
    padding-top: 20px;
}

.sidenav a {
    text-align: center;
    padding: 6px 8px 6px 16px;
    text-decoration: none;
    font-size: 28px;
    color: #ffffff;
    display: block;
}

.sidenav a:hover {
    color: #8df7c2;
}

.image_bottom_left {
    position: fixed;
    bottom: 16px;
    height: 40px;
    width: 40px;
    left: 4%;
}