DWQA Embed Questions doesn't work well in DW Fixel theme

It’s been awhile I use the DW Q&A plugin with the DW Fixel theme, but when I installed the DW Embed Question I realized that it’s not working well this theme. As shown in the screenshot, the plugin is larger than the theme damaging the look of the single Question page. 
 
How can we solve this proble, because I’ve tested the plugin with DW Simplex and DW Argo and it is not happening??