CSS - VLab Showcase
Look & Feel: CSS
What is CSS?
CSS is "Cascading Style Sheets", a cornerstone web technology used with HTML. It allows for very discrete, or alternatively, system-wide customization (and everywhere in between) to the look-and-feel elements of web pages. It is a very powerful tool to tailor the look and feel of your community to your liking. It is, however, a little more technical in that it requires that it be written like code (like html) and, if executed improperly, can ultimately affect more than intended. (It should be used carefully.)
(See the wikipedia entry for CSS for more details.)
What is it good for?
CSS can be used when you want fine-grained control over the appearance and behaviors of the graphical elements in your community. Using CSS is considered web design - having experience with HTML and CSS would help greatly in understanding what is and is not in the scope of using CSS in VLab.
(What is showcased here is basic. You can go deeper with CSS - and even expand into using Javascript to achieve even more elegant solutions to more complex problems.)
How Do I Use It?
This is a good resource for all of the various CSS options:
https://www.w3schools.com/css/
In the VLab User Guide, there is also a section describing how and where to inject CSS in your pages, portlets, and communities. (need link)