Sometimes your changes do not appear on your Magento website right away. Sometimes this is caused by the fact that Magento caches some of the content (depends on your Magento Cache settings).
Usually Magento will warn you about expired cache and will suggest to clear cache.
In any case you can always do this manually and this will refresh website look and make all your changes live.
Follow the steps below to clear Magento Cache:
- Go to administration panel > System > Tools > Cache Management
- Click Flush Magento Cache
This will refresh all Magento Cache Types. Alternatively you can refresh some types of cache only by selecting them in the list of cache types, choose Refresh and Submit.
You can read more about how to clear Magento Cache in Magento DevDocs.