Recently, I signed up with the Amazon's Lightsail service that comes with a version of Drupal (8.3) provided by Bitnami. I am not sure how this is different from any other installations, but when I tried to increase the font size of my site name, it wouldn't work.
The file I updated is style.css under ~/apps/drupal/htdocs/themes/zircon/css. (I am using the Zircon theme.)
The CSS ruleset I added is the following.
.site-name {
font-size: 30px;
}
I tried clearing the cache, unchecking the "Aggregate CSS files", but none of them works.
Googling, I learned that adding a sub-theme is recommended for the job, that I tried, but the admininistration pages of the site simply wouldn't load after I created a folder (with the .yml file in it) under the themes(~/apps/drupal/htdocs/themes) directory.
Is it still possible to update a given style.css file from a given theme?