From HTML Basics II - Lesson 8
I had set font-size:10px
and after I click "save & submit code", it said：
Oops, try again. Did you set the first paragraph's font-size to 10px? It looks like it's 10.9091px. (If you're getting a weird decimal font size, check the Hint.)
Why it always said I set first paragraph's font-size to 10.9091px?
Replace this line with your code.