Visual bugs

[yitongzhang]

• [ ] css animation everything
• [ ] sort alphabetically
• [ ] increase type contrast between body and header
• [ ] change nav bar font to smaller one
• [x] color change breaks on mobile :(
• [x] footer should exist (with links to a new tab)
• [x] Change theme colors per season
• [x] pin nav bar
• [x] 3 letter months
• [x] resize should trigger render

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• [ ] mobile scrolling pagination should advance selected month
• [ ] visually mark the all seasons and sorta seasonal.

[paulineglushko]

• [ ] months aren't centered on mobile
• [x] equalize vertical space above and below months on web
• [x] in scroll state of header the background is always green