zeeCorporate theme – change color of whitespace

HI

Im trying to change the back round color for all my whitespace on my website at https://getnetpresence.com/abnsite_com (using zeeCorporate theme)

I was able to change the back round where the text goes by adding the following line to my style.css

#content {
background-color: #becdff;
}

I was wondering if anybody knows how I can change all the whitespace ? maybe by altering above code or entering a new code

I would greatly appreciate the help with this

thank you