div.accordion {
    background-color: #fff;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    transition: 0.8s;
}

    /*button.accordion.active, button.accordion:hover {
        background-color: #ddd;
    }*/

div.panel {
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}