.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.image-box {
    flex: 0 0 calc(33.33% - 20px);
    margin: 10px;
    padding: 3px;
    position: relative;
    box-sizing: border-box;
    background-color: #f0f0f0;
    overflow: hidden;
    transition: transform 0.3s ease-in-out;
}
.image-box:hover {
    transform: scale(1.05);
}
.image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    animation: pop 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}
@keyframes pop {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}
.popup-image {
    max-width: 90%;
    max-height: 90%;
}
.close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
}