.collapsible {
    background-color: #ffffff;
    color: black;
    cursor: pointer;
    padding: 0px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-family:Tahoma,Arial,sans-serif;
    font-size:12px;
}

.active, .collapsible:hover {
    background-color: #90BBFF;
}

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