Site width

You can edit these classes in style.css

.sidebar-primary {
    float: right;
    width: 30%;
}
.content {
    float: left;
    width: 70%;
    padding-right: 40px;
}

The above code didn’t change the width. It made no noticeable difference. However, for some reason, I overlooked the

.wrap {
    margin: 0 auto;
    max-width: 1250px;
}

portion of CSS. I don’t remember what the default was, I think 980px or something similar, but once I upped that to 1250px, it damn near filled the page. Perfect.

And thank you so much for such a quick response. I really appreciate it.

Sorry for misleading. Thought you were talking about content width. Glad you figured it out.
??

No worries! You didn’t mislead. Just a little misunderstanding. Thanks again!