.modal-content {
    background-color: rgba(0,0,0,0.75);
}

.close {
    font-size: 2.0rem !important;
    color: #fff;
    text-shadow: 0 0 0 #fff;
    opacity: 1;
}

.close:hover {
    font-size: 2.0rem !important;
    color: #fff;
    text-shadow: 0 0 0 #fff;
    opacity: 1;
}

#closeYoutube:hover {
    opacity: 1 !important;
}