Full Width Header and Footer

Here is another updated version of my method to create a full width header and footer, that contains centered content!

'May it please your Majesty,' said Two, in a very humble tone, going down on one knee as he spoke, 'we were trying—'

'I see!' said the Queen, who had meanwhile been examining the roses. 'Off with their heads!' and the procession moved on, three of the soldiers remaining behind to execute the unfortunate gardeners, who ran to Alice for protection.

'You shan't be beheaded!' said Alice, and she put them into a large flower-pot that stood near. The three soldiers wandered about for a minute or two, looking for them, and then quietly marched off after the others.