One of the elements in a high quality website is site speed. Google wants this and visitors want this.
What we do to make a website go lightning fast. We combine Cloudflare and W3 Total Cache.
Problems when updating style sheet not showing. Child theme style sheet changes not being updated.
You can empty all caches here. If not look where to empty cache.
Here is how to empty cache in W3 Total Cache.
You can try purging them by logging on to Cloudflare and selecting this option.