Remove font styles you've added in Google Fonts.
Same idea but now change Categories to "Display" and/or "Handwriting"
Find a font you like and Select this style.
Click the @import option and copy the style in the first box
Paste that on a new line at the top of your style sheet
Save your style sheet and take a look at your page. Do you like it?
Go inside the h1 style and add a new line font-size and set the size using em (where 1.5em = 150% of regular text size). Start with 2.5em (in my example I like it a little bigger than that).
Copy your h1 style in the style sheet and change it to h2 and reduce the size a bit.
Go back inside your h1 style and make it centered using the text-align property.