[65.5] styling parity

[bdolor]

Is your feature request related to a problem? Please describe.
styling of the find open textbooks page has been updated

Describe the solution you'd like
The work captured here is to look at the page as a whole, and resolve any obvious inconsistencies with respect to look and feel such as alignment, icons, borders, colours, etc.

Describe alternatives you've considered
N/A

[ehbeattie]

Holy cats! This is actually starting to come together!