Two: Can't Remove "Recent Site Articles", Make Main Container Semi-Transparent

1) I can't seem to find how to remove "Recent Site Articles" from my Homepage. As you'll notice on my site, I have two test text intros ("Test Homepage Intro" and "Text text") and I've been banging my head around trying to find an option on the Dashboard or somewhere in the code to remove this.

2) This is less of a problem, and if it requires any work on anyone else's part forget it - my lack of knowledge about coding is my own problem. Ideally, I am trying to make the main page container semi-transparent so that the background image displays better. I have seen examples of code to use, but because the Dixi style sheet is empty I am a little unsure where to put potential code.

Any help, or pointing to help, is most appreciated.