fix profile view header bug and button spacing

[monicawoj]

Fixes error seen in pprof.me and introduces one additional styling modification

[alwaysmeticulous]

🤖 Meticulous replayed 50 user sessions and took 243 screenshots. Meticulous has not yet run on 4c0a949 of the main branch and so there was nothing to compare against.

If you recently setup Meticulous, this is expected. Meticulous will start reporting comparisons for new pull requests after the next commit to the main branch.

_{Last updated for commit 39071b7. This comment will update as new commits are pushed.}