I have page: http://www.silentcivilian.net.tc/v2

And where it is written "New Re-Designed Site Under Construction Right Now! " I want the background color semi-transparent so that the tiled logo can be seen through the background but not through the text of course.

I cant seem to get this right. The relavant css file is http://silentcivilian.net.tc/v2/masterstyle.css and the rule pertaining is subcontent