.my_func {
    background-color: #f5f5f5;
    font-family: Courier New !important;
    padding: 5px;
    overflow: auto;
    margin: 5px 0;
    color: #000;
}
.my_ref {
    background-color: #f5f5f5;
    font-family: 'times new roman', times;
    padding: 15px;
    overflow: auto;
    margin: 5px 0;
    color: #000;
}