Complex sentence: This is not common practice in mainstream publishing, which will generally use more precise kerning, it is common in online writing, though using CSS to create the spacing by kerning is more semantically appropriate in Web typography than inserting extraneous spacing characters.
Split into simpler sentences: This is not common practice in mainstream publishing, which will generally use more precise kerning. It is common in online writing, though using CSS to create the spacing by kerning is more semantically appropriate in Web typography than inserting extraneous spacing characters.