Body
The default text size is 16px
Header
I am a h1 inside an header and I am 32px (2 x default font size)
I am a h2 inside an header and I am 24px (1.5 x default font size)
I am a h3 inside an header and I am 18.72px (1.17 x default font size)
I am a h4 inside an header and I am 16px (1 x default font size)
I am a h5 inside an header and I am 13.28px (0.83 x default font size)
I am a h6 inside an header and I am 10.72px (0.67 x default font size)
I am a h1
I am a h2
I am a h3
I am a h4
I am a h5
I am a h6