You can use style editor to style layers, you can create a new style or use preset styles, you could also save the custom style as a preset for using it in other sliders and slides.
There are a lot of options for you to style your layer and apply them with the option of seeing changes in real-time preview. There is an option to use 600+ Google fonts, adding custom CSS from "Custom style" tab and a lot more.
Please note that if you remove a style from preset list it will affect other sliders that use this specific preset style as well and their style would be removed.
The figure below shows these options on Master Slider panel.