[TYPO3-english] Header styles in TYPO# 4.2.1

[harishathreya .]

Hi List,
 In my new TYPO3 4.2.1, how do i assign style to headers? Is it in constant
editor? if yes how? and if no where else & how else? My headers are not
appearing properly, they are not taking any styles. I had previous version
of TYPO3 (4.0.3), in that i had the option of entering the styles (from CSS)
between div tags, here i did not see any such option... please let me know
how do i proceed further.

Thank you,
Harish.