/* https://stackoverflow.com/questions/49202887/where-has-btn-default-gone-in-bootstrap-4 */
.btn-default {
    color: #333;
    background-color: #fff;
    border-color: #ccc;
}
.btn-default:focus {
    color: #333;
    background-color: #e6e6e6 !important;
    border-color: #8c8c8c !important;;
}
.btn-default:hover {
    color: #333;
    background-color: #e6e6e6 !important;;
    border-color: #adadad !important;;
}
.btn-default:active {
    color: #333;
    background-color: #e6e6e6 !important;;
    border-color: #adadad !important;;
}