normal
“The parameters comprise sequences which are theoretically infinite but limits are, of course, set to them in practice. There is an upward limit to size and certainly a downward one... Within these sequences there are reasonable bounds; extremes set by technical and functional experience”
In Designing Programmes by Karl Gerstner
.css-gui-element {
padding: 128px;
background: url("https://source.unsplash.com/random") center center / 100% no-repeat fixed border-box border-box;
font-family: Space Mono;
line-height: 1.5;
letter-spacing: normal;
font-size: 2rem;
}