body, html {
    height: 100%;
    margin: 0;
    background-color: white;
}

.container {
    display: grid;
    place-items: center;
    height: 100%;
}

.container img {
    max-width: 80%;
    max-height: 80%;
}

@media only screen and (max-width: 600px) {
    .container img {
        max-width: 100%;
        max-height: 100%;
    }
}