When you are marketing on the internet, please remember that it is much more difficult to read than the printed page, for most people.
Not only do you want to present a clean font, in a ‘double digit’ size, you want to include PLENTY of ‘white space’ around your text.
White text on black background – hard to read.
Apparently, you may also get some benefit from using the ‘right’ font. For now, that’s just hearsay. A little more research may be needed to verify that for you.