body {
    display:grid;
    grid-template-rows:auto 1fr auto;
    margin:0;
    min-height:100dvh;
}

#hb {
    background-image:url("https://robertgravesletters.org/images/RG.jpg"); 
    background-position:80% 20%;
    background-size:cover;
    display:grid;
    grid-template-rows:auto 1fr auto;
    margin:0;
    min-height:100dvh;
}