use upper and lower cases consistently

Tags are with upper cases, classes with lower.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
remove all unnecessary bytes from the page

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
do not mix double and single quotes

Signed-off-by: Sami Kerola <kerolasa@iki.fi>