Combien de pixels est H1 Text HTML

h1 is   32px   (2em)
h2 is   24px (1.5em)
h3 is 20.8px (1.3em)
h4 is   16px   (1em)
h5 is 12.8px (0.8em)
h6 is 11.2px (0.7em)
Successful Sheep