Constraint reports generally look okay under Timeless, but there are two issues in this screenshot:

For comparison, under Vector:

• Timeless grants a generous margin-top to headings. That should be easy enough to override. Alternatively, we could also stop making the constraint name a heading (h4), which would also get rid of the serif font. I’m not sure which I would prefer.
• The “help” and “discuss” links flow into the violation message – in Vector, they also don’t fit into one line with the constraint type name, but they’re still separated from the violation message. I haven’t yet figured out what part of CSS effects this change.