#mainImage {
    width: 100%;
    height: 70%;
    display: flex;
    justify-content: center;
}

#mainImage:hover {
    transform: scale(1.01);
    transition: transform 0.3s;
}
#mainImage  > a > img{
    display: block;
    max-width:100%;
    max-height:70vh;
    width: auto;
    height: auto;

}