* {
 box-sizing:border-box;
}
body {
 display: flex;
 align-items: center;
 justify-content: center;
 flex-direction: column;
 padding-top: 20vh;
}
body > img {
 margin-bottom: 20vh;
}

img {
 object-fit: cover;
 width: 300px;
 max-width: 80vw;
 aspect-ratio: 1/1;
}

.spacer {
 height: 100vh;
}