Positioning of the Tagline and title, please help

after i searched though google, i found some sloutions to move a title and tagline, but the problem is that after i move them they dissapper
I am using a clickable header image, and i hid the title, but i wanted the tagline to appear on top of the img at a certen position, so that i can change the tagline all the time. without adding

position:relative;
bottom:10px;
right:10px;

the tagline appear white and above my header img, but after i added :
position:relative;
bottom:10px;
right:10px;

the tag line dissappear.
can anyone help me on this?

thanks in advance