.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

.modal-overlay .modal-container {
    background-color: var(--white-main);
    padding: 2rem;
    max-width: 430px;
    width: 100%;
    position: relative;
}

.modal-overlay .modal-container::before {
    content: "";
    position: absolute;
    bottom: -5%;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% + 50px);
    height: 110%;
    border-radius: 40px;
    background-color: var(--white-main);
    opacity: 0.2;
    z-index: -1;
}

.modal-overlay .modal-container .close-btn {
    background-color: var(--gray-light);
    color: var(--off-white);
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
}

.modal-overlay .modal-container .close-btn:hover {
    background-color: var(--gray-dark);
}


@media screen and (max-width:768px) {
    .course-join.card.rounded-card.flex.align-center.justify-between {
        display:none;
    }
}