Add style for XML code blocks
Add style for XML code blocks

brython-dev/brython,brython-dev/brython,kikocorreoso/brython,kikocorreoso/brython,jonathanverner/brython,kikocorreoso/brython,Hasimir/brython,Hasimir/brython,jonathanverner/brython,brython-dev/brython,jonathanverner/brython,jonathanverner/brython,Hasimir/brython,Hasimir/brython