.collapsible {
    color: black;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    border-radius: 7px;
    border: 1px solid #ccc;
    box-shadow: 1px 1px 1px 1px #eeeeee;
}

.active,
.collapsible:hover {
    box-shadow: 1px 1px 1px 1px #2196f3;
    border: 1px solid #2196f3;
}

.content {
    padding: 0 18px;
    margin-top: 8px;
    margin-left: 5px;
    margin-right: 5px;
    margin-bottom: 5px;
    display: none;  
    overflow: hidden;
    border-radius: 7px;
    color: #111111 !important;
}