I'm not sure why, but there were unexpected escape and space characters within the generated CSS files. I've looked up the source, but everything is fine there, so I suspect that the cause was either some sort of 3rd party minification service or a plugin, or an input validation browser extension (?).
Anyways, when I saved the search options on the back-end, and then reloaded the front page again by hitting CTRL + SHIFT + R to clear the cache, the CSS file displayed correctly. It is minified though, which I guess comes from your CDN or cloudflare if you use any. It may have been only some sort of cache inconsistency.Best,
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