Test

A short snippet showing that the <header> element is centered vertically...
A short article snippet...
A short article snippet...
A short article snippet...

Test

A short snippet showing that the <header> element is centered vertically even with a longer snippet length.
A short article snippet...
A short article snippet...
A short article snippet...

Test

A short snippet showing that the <header> element is centered vertically...
A short article snippet...
A short article snippet...
A short article snippet...
Items that don't fit on the same line simply wrap. The <header> repositions accordingly.