clean up for sharing

[cnell-usgs]

Changes made:

Making sure all thumbnails are in and alt text is written. Made some style changes to reduce page clutter and look more structured. Featuring hiring blog post at top.

Testing:

Before making this pull request, I:

• [ ] Cleaned the code the way Vue likes it - run 'npm run lint --fix'
• [ ] Made sure all tests run
• [ ] Ran WAVE plugin 508 compliance tool

I can confirm this has been checked on:

• [ ] Chrome
• [ ] Safari
• [ ] Edge
• [ ] Firefox
• [ ] Samsung Internet
• [ ] Internet Explorer 11 (not supported, but still needs at least a working user redirect page)

[cnell-usgs]

Merging now to update site since just posted blog post, will address these shortly