Describe the bug, including details regarding any error messages, version, and platform.

Hello, this is a minor detail but it's hard to read some of the text in the navbar on the website, specifically the version number (next to "Arrow R Package") and the text in the search box:

I also think the text for section names ("Get started", etc.) could be a bit lighter. I use Firefox (current is 123.0.1) in case it's a browser-specific thing.

Component(s)

Documentation, R