Your "About Us" section is really good. I like the font style and everything is super organized and easy to read. Although I'de change the font for the bottom text "We will personally..."to match the rest of the block. Also, shadow under black font color looks a bit odd and makes the text undefined.
For the last block, I'de replace that gray background tab color with your "teal" color . And then, you could set the font color that goes on top of it to a white and add a small defining text shadow.
And as others mention, for the background I'de go with something more minimal.