.gallery {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    align-content: center;
    padding-top: 15px;
    padding-bottom: 30px;
}

.gallery-item {
    margin: 15px;
    transition: 1s;
    border-radius: 15px;
}

.gallery-item:hover {
    transform: scale(1.3);
    z-index: 1;
}

.gallery-image {
    width: 500px;
    height: 281px; /* 16:9 ratio add below line under link to change */
    /* <style>.gallery-image{height: ###px; width: ###px;} </style> */
    border: rgb(255, 0, 0) 3px solid;
    border-radius: 5px;
    object-fit: cover;
    cursor: pointer;
}

/* mobile version */
@media only screen and (max-width: 600px) {
    .gallery-image {
        width: 100px;
        height: 56px;
    }
}