Top-search, search page, sidebar

Top-search, search page, sidebar

- Top search now functional: expands on click, contracts on click.
Flaw: user may expect clicking on search to do a search, not contract.
- Search page: wasn't prepared for the sidebar, wasn't properly
handling empty searches. Search result styling wasn't touched at all.

- Sidebar: wasn't acting responsively, wasn't set up for search page.