.author-lower img, .author-upper img{
    width: 100%;
    height: auto;
    border-radius: 1000px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: top;
}

.author-upper img {
    max-width:25px;
}
.author-lower img {
    max-width:70px;
}