.collapsible {
    background-color: #f1f1f1;
    color: #444;
    cursor: pointer;
    padding: 10px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 18px;
    font-family: 'Museo', sans-serif;
    /*text-transform: uppercase;*/
    letter-spacing: 1px;
    transition: background-color 0.3s ease;
    margin-bottom: 10px;
}

    .active, .collapsible:hover {
        background-color: #ccc;
    }

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

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

.content {
    padding: 0 18px;
    display: none;
    overflow: hidden;
    background-color: #f9f9f9;
}