Buttons
Basic Buttons
For most buttons, you will just use simple classes.
Icon Buttons
Or you can also use it in combination with an icon. Jhana will auto-detect any direct svg or img child. In case you need an only-icon no-text button, you should add the icon class.
Spinner Buttons
If you want to indicate the progress of a button click, you can juts drop a Spinner in there. It will magically work. But you need to wrap the spinner in an empty container.