.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
}

.overlay-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.overlay-image {
    max-height: 100%;
    max-width: 90vw;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: red;
    color: #ffffff;
    border: none;
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
}