Sets the font-size for the whole form.

• size - the font-size you want to set to the form
  Available values:
  • 'xx-smal' - xx-small size
  • 'x-small' - extra small size
  • 'small' - small size
  • 'medium' - medium size
  • 'large' - large size
  • 'x-large' - extra large size
  • 'xx-large' - xx-large size
  • 'smaller' - smaller size than the parent element
  • 'larger' - larger size than the parent element
  • length - a fixed size in px, cm, etc.
  • % - percent of the parent element's font size
  • 'inherit' - font-size inherited from the parent element

myForm.setFontSize('15px');