Tom Byers 9441dd0b37 Make <main> section position: relative ...

The content of the GOV.UK Frontend header
component is `position: relative`. This changed
the [default z-index
stacking](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/Stacking_without_z-index_
so it was above `<main>`.

This aligns `<main>` with the header, meaning
`<main>` appears above it due to being below it in
the document.

2019-11-27 14:15:32 +00:00

..

error_pages

…

images

Remove old branding illustrations

2019-09-16 11:21:07 +01:00

javascripts

Add GOV.UK Frontend JS

2019-11-27 14:15:32 +00:00

stylesheets

Make <main> section position: relative

2019-11-27 14:15:32 +00:00