Editing Sundrop theme header text

I am a complete novice to all this, so bear with me.

My site is weirdandwonderfulnews.com.

The theme I am using is from Template Panic and is called ‘Sundrop’.

I can’t find where in the theme’s CSS code I can edit the header text. It’s stuck on the theme’s name, Sundrop. I want the header to be ‘Weird and Wonderful’.

Any help would be very much appreciated!