Instead of having 2 CSS files could you instead change the CSS with JavaScript on change of the checkbox?
Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink.
Hide child comments as well
Confirm
For further actions, you may consider blocking this person and/or reporting abuse
Instead of having 2 CSS files could you instead change the CSS with JavaScript on change of the checkbox?