.sanfona {
    background-color: #3e6892;
    color: white;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    transition: 0.4s;
}

.sanfona_div p{
    padding-top: 10px;
}

.sanfona:after {
    content: '\02795'; /* Unicode character for "plus" sign (+) */
    font-size: 13px;
    color: white;
    float: right;
    margin-left: 5px;
}

.active-sanfona:after {
    content: "\2796"; /* Unicode character for "minus" sign (-) */
}

.active-sanfona, .sanfona:hover {
    background-color: #4d7dad;
}

.painel {
    padding: 0 18px;
    display: none;
    background-color: white;
    overflow: hidden;
}