Build a Framework7 floating action button (FAB)
f7Fab(inputId, label, width = NULL, ..., flag = NULL)The input slot that will be used to access the value.
The contents of the button or link--usually a text label, but you could also use any other HTML, like an image.
The width of the input, e.g. '400px', or '100%';
see validateCssUnit().
Named attributes to be applied to the button or link.
Additional text displayed next to the button content. Only works if f7Fabs position parameter is not starting with center-...