Both marks' viewBoxes were square and already rendered at the same 23.5x23.5px box, so width/height: 1.4em changed nothing. The real cause: the Docker artwork only fills ~49.7% of its own viewBox height (a wide, short mark with vertical whitespace above and below), while the Pi silhouette fills the full height of its own. Tightens each viewBox to its measured artwork bounding box (path data untouched) and switches .run .mark to height-driven sizing with width: auto, so both marks now share one visible height and take their natural width — the Docker mark ends up noticeably wider than the Pi's, which is the correct consequence of equal height for a wide-aspect mark. Also fixes .run-note's padding-left, which assumed both marks were a 1.4em square: it used em inside a rule with a smaller local font-size than the row's, a latent mismatch that became visible once the Pi mark stopped being square. Rewritten in rem so the note still lines up under the SBC row's label text.