Using a background image and a white container

Mup

When adding an image background to the body, the main discussions container becomes transparent. Normal.
So, I would like to add a white background to discussions .container.
But! The discussions .container and the Hero's .container are inside the same #content ID.
How can I target the discussions .container only?
Here is a screenshot:
http://i.imgur.com/q3HVvDP.png
Can anyone bring some light into my life? please ?

This will change the color to my target but will also change the color to Hero's container
#content .container {background-color:#fff;}

FBI

To combine white color of background, I suggest find and use white background image also.
And you can remove the

background-color

completely from #content .container

then add this sample code to your css
.app style class

. app {
.... original code
... adding below
background: url(http://previews.123rf.com/images/djem/djem1503/djem150300095/38744220-Fishing-background-Stock-Vector.jpg);
background-attachment: fixed;
background-repeat: no-repeat;

and make neccessary change to .App-content class also, for mobile view..

note: please remove hot linking with your own image ?

Mup

FBI Your reply is much appreciated, but I would like to stick to my background as I bought it especially for this project on graphicriver.

I'm still hoping for a solution.