classNames that takes strings separated by spaces.
<x-bl.text classNames='bold italic'>Your text</x-bl.text>
<strong> and <em> elements
¶ 1 Example text using longer text within <p> tags -- which allow for more expressive usage.
¶ 2 I like to know why people like to dance on their tip-toes.
¶ 3 Paragraph 2 uses <strong> and <em> to implement targeted emphasis.