Update target highlight rule in "responsive" HTML5 stylesheet.
tree51af307d86a38f83e53db15c8bf481e96b8f232b
-rw-r--r-- 3165 .flake8
-rw-r--r-- 1662 .gitattributes
-rw-r--r-- 393 .gitignore
-rw-r--r-- 616 .pre-commit-config.yaml
drwxr-xr-x - docutils
drwxr-xr-x - sandbox
drwxr-xr-x - web