.collapsible {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
}

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

.content 
 {
    padding: 0 18px;
    /*display: none;*/
    overflow: hidden;
    background-color: #f1f1f1;
 }
.font-size-sub-heading {
    font-size: 30px;
}
.font-size-min-heading {
    font-size: 20px;
}
.font-size-min2-heading {
    font-size: 17px;
}
.font-size-slide-content {
    font-size: 18px;
    color: black;
}