add new home, accessibility and contribute placeholders WD-1300 WD-1344

[edlerd]

• added new placeholder for home page

[webteam-app]

Demo starting at https://design-ubuntu-com-265.demos.haus

[bartaz]

@edlerd One little thing - I think in the design the lines between the strips are not meant to be full width. So instead of using bordered strips we should put hr element in the grid, like on resources page.

[edlerd]

@edlerd One little thing - I think in the design the lines between the strips are not meant to be full width. So instead of using bordered strips we should put hr element in the grid, like on resources page.

@bartaz that is true. Can you check the latest commit @ https://github.com/canonical/design.ubuntu.com/pull/265/commits/2864628a9a8143e4f85a082b8514f5a53252fbe1 if it is all well?

[bartaz]

@edlerd I guess all hrs should span across whole 12 columns? let's do that and later we can get the design review of that once we have all pages in place.

[edlerd]

Changed it to span the full row.