By default our templates supports a multitude of extensions, but supporting so many extensions the template needs to load multiple CSS files, making it slow sometimes, when your visitors try to load it on their browsers. In order to stop that, our templates are built with speed in mind, so if you don't use all extensions that the template supports, which in most cases you won't, you can disable the less files that supports the styles for the extensions that the template supports from Joomla back-end administration.
Let's say we don't use RokSprocket extension at all and because of that we don't want the browser to load all the CSS for this particular extension. Reducing the amount of CSS that the browser loads will make the template faster.
1Go to Extensions -> Template manager -> st_yourtemplate.
2Select by clicking Advanced Tab.
1On RokSprocket Styling select OFF and save.
You can do the same for all extension styles that the template supports. Once you disable a style, the LESS file for that extension style will not compile into CSS and it will not be added to the master.css file. In this way your master.css file will get smaller.