docs: fix height of search-box on firefox browser

[unix]

Checklist

• Fix linting errors
• Tests have been added / updated (or snapshots)

Change information

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[codecov]

Codecov Report

Merging #745 (d353dea) into master (57ef41f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #745   +/-   ##
=======================================
  Coverage   98.85%   98.85%           
=======================================
  Files         198      198           
  Lines        3045     3045           
  Branches      669      669           
=======================================
  Hits         3010     3010           
  Misses         34       34           
  Partials        1        1           

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