I’ve added the plugin for the GC Testimonials widget to my WordPress site which is using the Solostream Professional theme.
When the widget is added to the home page, it causes the width of any subsequent plugin to be about 1/2 the width of the column rather than the standard width. It also causes the footer to extend to the page width rather than span the entire browser.
When I remove the widget from the page, the footer spans the browser. When I add the widget back to the page, the footer only extends the width of the page. The footer appears correctly on all other pages of the site regardless of whether or not the widget has been applied.