.sidebar {
    position: fixed;
    width: 400px;
    bottom: 0;
    left: 0;
    height: 100%;
    z-index: 1000;
    display: block;
    padding: 20px;
    overflow-x: hidden;
    overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
    background-color: #f5f5f5;
    border-right: 1px solid #eee;
    box-shadow: 0 10px 0px rgba(0, 0, 0, 0.132), 0 0px 10px rgba(130, 154, 189, 0.71);
}


.sidebarhidden {
    display:none;
}