This is the base font size.

This is should be the same size as the base font size.

This is should be the same size as the base font size.

This is a level 1 heading, but it should be the same size as the base font size.

This is a level 1 heading, but it should be the same size as the base font size.

This is a level 1 heading, but it should be the same size as the base font size.

This is a level 2 heading. The font size should be twice the base size.

This is a level 2 heading. The font size should be twice the base size.