Responsive video for old-style embeds

Signed-off-by: Peter Hartree <web@peterhartree.co.uk>
Remove "and we won't just tell you to follow your passion" text from homepage.

Signed-off-by: Peter Hartree <web@peterhartree.co.uk>
Set 'sans-serif' as fallback for header font-family

Signed-off-by: Peter Hartree <web@peterhartree.co.uk>