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CSS

Posted by ja5on
ja5on
10,338 Points

my pixel working out doesn't match what's displayed?

html { font-size: 20px; }
h1 { font-size: 2rem; }

1rem = 16px so 4rem = 64px

so 64px + 20px (inherited from html) = 84px
But when inspected the h1 shows 80px ? No padding either.

1 Answer

Martin Balon
Martin Balon
43,651 Points
Martin Balon
Martin Balon
43,651 Points

Hi Jason,

rem is based on the root of the element. So if you set font-size in html (which is root in this context) as 20px then 1 rem is 20px. So if you set font-size of h1 to 2rem the result is 40px and h1 set to 4rem is therefore 80px.

ja5on
ja5on
10,338 Points

oh root of the element yes it is isn't it, I forgot. thanks