Content area is too small

by

You need to edit your theme’s CSS to do this.

In style.css in your 2014 folder on line 1021:

.site-content .entry-header,
.site-content .entry-content,
.site-content .entry-summary,
.site-content .entry-meta,
.page-content {
    margin: 0 auto;
    max-width: 474px;
}

change 474px to whatever you want your content width to go up to. Or set it to 100% to stay full width.