Insert Custom Background?

Do you have a link?

You would need to remove the background color on the #wrap located around line 189 in your css.

…and if you want to remove the slider background, take a look around line 2252 in your css file for – .slider-wrap

You would need to edit the “entry-content” class since that is the div that page and post content are inside of. Some widgets use “entry-content” so you may want to add code that targets just the page/post entry content.

Example –

.page .entry-content,
.post .entry-content {
background: #fff;
}