.intro-modal {
    visibility: hidden;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    transform: scale(1.1);
    transition: visibility 0s linear 0.25s, opacity 0.25s 0s, transform 0.25s;
    z-index: 100000000000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.intro-modal-content {
    max-width: 50em;
    max-height: 37.5em;
    width: 90%;
    height: 90%;
    padding: 20px 20px;
    background-image: url(popup-background-christmas.webp);
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: 0.5rem;
}

.intro-close-button {
    background-image: url("close.png");
    background-size: 16px 16px;
    background-repeat: no-repeat;
    background-position: center;
    float: right;
    width: 16px;
    height: 16px;
    cursor: pointer;
    transition: all .2s ease-in-out;
    filter: invert();
}

.intro-close-button:hover {
    transform: scale(1.1)
}

.show-intro-modal {
    opacity: 1;
    visibility: visible;
    transform: scale(1.0);
    transition: visibility 0s linear 0s, opacity 0.25s 0s, transform 0.25s;
}

@media (max-width: 768px){
    .intro-modal-content { 
         
    }
}