The layout isn't just about header padding.
The layout isn't just about header padding.

This reverts part of 7ec6d4189bb353e62dcdf2f9830076304c718bad. My
original intention was to use the same header padding as the rest of
the site for the index, but I hadn't realised that the navigation
was also part of the layout. It's obvious in retrospect.

askl56/whitehall,ggoral/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall,robinwhittleton/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,robinwhittleton/whitehall,alphagov/whitehall,alphagov/whitehall,askl56/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,alphagov/whitehall,askl56/whitehall,robinwhittleton/whitehall,robinwhittleton/whitehall,alphagov/whitehall,hotvulcan/whitehall,ggoral/whitehall