[TASK] Add some basic stylings

[benjaminkott]

No description provided.

[linawolf]

_propertyCard.scss — .property-card > dt is missing display: flex

The new align-items: center / column-gap on & > dt are added, but the old display: block was removed without a replacement — so they're currently inert. Not a visible regression (main already had display: block), but the flex-row header this seems to be going for never actually applies.

Would be visible on dl.command > dt (simple name + headerlink) if fixed. dl.confval already works around it via its own hardcoded d-flex. Careful with dl.php > dt though — it often has many inline children (name, parens, multiple params, return type), so a blanket display: flex there would insert column-gap between every token and break the signature spacing. May need a narrower fix than just adding display: flex to the shared rule.