[SOLVED] Opacity in the lower part of the header

Hi,

I'm trying to change the opacity setting to have a shadowy part in the bottom of my header image.

I already enlarged the left opacity to cover the full width but playing with the height setting only allows me to get the shadowy part on the upper part of my header ... hence getting the opposite effect of what I'm trying to do.

Thanks for your help even if I know you're a bit alone these days.

Cédric