.welcome-popup {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    overflow: auto;
}

.popup-content {
    position: relative;
    background-color: transparent;
    margin: 5% auto;
    padding: 0;
    width: 80%;
    max-width: 700px;
    animation: popupFadeIn 0.5s;
}

.popup-content img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
}

.close-popup {
    position: absolute;
    right: -15px;
    top: -15px;
    color: #fff;
    font-size: 28px;
    font-weight: bold;
    background: #000;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    text-align: center;
    line-height: 28px;
    cursor: pointer;
    z-index: 1000;
}

.close-popup:hover {
    color: #ccc;
}

@keyframes popupFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}