.back-forward-anchor {
    color: whitesmoke;
    text-decoration: none;
}

.back-forward-button, .jupyter-button{
    background-color: #424141 !important;
    border: none;
    width: 33%;
    color: #ecfffb !important;
    padding: 10px 10px;
    text-align: center;
    text-decoration: none !important;
    display: inline-block;
    margin-left: 33%;
    cursor: pointer;
}