updates the layout

Merged Stuart Robson requested to merge stu/impovements-v1 into master

content tweaks

lots of inline CSS tweaks

note - I couldn't get the latest CSS to download and compile via NPM so this is using a link to v2.4.0 - @khawkins-embl can you see what I did wrong here?

tablet layout looks 'odd' but content is visible.

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