title: Can font size be set to 0px to hide labels, and still be readable by screen readers
body: <p>I need to implement a form with placeholder text and no visible labels, but still have it be accessible to non-sighted users. Setting a <code>text-indent: -9999px</code> on the labels hides them, but adds extra space to the form.  Is there any reason not to just set the font size to 0px?  Will it still be readable by screen readers?</p>