button.accordion {
    /*background-color: #eee;*/
    background-color: #D0F0C0; /*DarkOliveGreen;*/
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    transition: 0.4s;
}

    button.accordion.active {
        /*background-color: #ddd;#4F7942*/
        background-color: #00663F;
    }
    button.accordion:hover {
       background-color:white;
    }

    button.accordion:after {
        content: '\002B';
        color: #777;
        font-weight: bold;
        float: right;
        margin-left: 5px;
    }

    button.accordion.active:after {
        content: "\2212";
    }

div.panel {
    padding: 0 18px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
}