Header and subscribe-box fix is live on books.satsuma.one

A fix to the header and the subscribe box on books.satsuma.one, the website for Satsuma's book, was merged and is live. It removed the language label from the header, stopped the header's link colors from overriding the Buy the book button so the button's text stays readable at rest and on hover, and restyled the Get Chapter 8 free box dark, in the same card style as the other panels. The operator deployed it.

Before the merge, both book pages were checked in dark mode with headless Chrome. "After the deploy, the live HTML no longer had the "Language" label and the live stylesheet had the new button rule."

One thing remains unchecked. "The hover itself still hasn't been tried in a real browser, because the Chrome extension wasn't connected."