As default in pico.css, padding-top and padding-bottom of <article> tag is 3.5rem and padding-left and padding-right of <article> tag is 1.75rem.
And for <header> tag, they set margin-top as -3.5rem to remove space on top, and also set margin-left and margin-right as -1.75rem to remove space on left and right side.
Additionally, they set 3.5 rem to margin-bottom of <header> tag for spacing.
I've changed it to 1.5 rem in code, but you can adjust it as your mind.
As default in pico.css, padding-top and padding-bottom of
<article>
tag is 3.5rem and padding-left and padding-right of<article>
tag is 1.75rem.And for
<header>
tag, they set margin-top as -3.5rem to remove space on top, and also set margin-left and margin-right as -1.75rem to remove space on left and right side.Additionally, they set 3.5 rem to margin-bottom of
<header>
tag for spacing. I've changed it to 1.5 rem in code, but you can adjust it as your mind.