Hi Steve,
Thank you for the details, it helps us a lo!
If the changes are not populating to the front-end of your site – that is usually because of heavy cache. If you are using any caching/speed plugins, make sure to clear all layers of cache – including page, minify, asset, browser, CDN, cloudflare etc.. That will resolve the issue.
Turning off the cache while making changes to the website is usually the best way to avoid these issues. Once the styling is ready, the cache can be turned back on.