Using Typography to Get Attention
Using changes in font sizes to get attention is nothing new. But before you go out and make your headlines 48px or larger, you need to follow a few simple rules:
Is this really that important?
If you're announcing a 30% off shoe sale, it might be important to some people but making the font unbearably huge will just turn most people off.
What's the standard font size on your page?
If you type everything at 20pt, then creating a 30pt headline will not look that much different. But a 16pt headline next to 8pt text might look huge.