Move CSS files to subfolder
Rename all CSS files to SCSS
Add auto-generated CSS files
Stabilize flex by setting fixed hieght

Note: need to figure out why flex-items percentages are not working
Add (and use) _flex import
Panel hoovers over map, zoom fixes, locate panel

- Change map+panel layout from flex to absolute
- Resurrect locate panel, center w/flex
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Separate scss files from css