Solid color behind articles

My family has decorated my grandfathers house for Christmas with over the top stuff for 50 years. We wanted to mark the occasion with a new website and DW Timeline seemed like the best theme for what we needed. My dad insists on a background image in the scrolling timeline section but in the other pages it is putting that image behind the text. I’d like a solid white color behind the post/page content and in the HTML that is spit out it just looks like <article> or <div> with no id for me to call in CSS. I know I just need to add something to a few files like
#article {background-image: none, background:#fffff}textarea {background-image: none}
idk. Also, I can’t seem to find a way to get the carousel to keep images the same height, even if I edited all the images in the post to be the same height it still jumps the nav/captions around on the main page.   BTW thanks for supporting this free theme 🙂 I may upgrade to the pro version if I ever get a donation to my dad’s site.