.hentry { max-width: 850px; }
.site-content .entry-header,
.site-content .entry-content,
.site-content .entry-summary,
.site-content .entry-meta,
.page-content,
.post-navigation,
.image-navigation,
.archive-header,
.page-header,
.contributor-info,
.comments-area,
.widecolumn > h2,
.widecolumn > form { max-width: 650px; }