remove widget title

I want to remove title from the three wigets (Widget 1, 2 and3) on the home page of this site :”http://www.mervynbeamishartist.com”>.

I’ve been reading topic http://ww.wp.xz.cn/support/topic/hide-title-in-text-html-widget?replies=10> but that didn’t help.

Theme: Responsive.

another topic on same widgets: href=”http://ww.wp.xz.cn/support/topic/background-image-for-a-widget?replies=1″>

Hope someone can help 🙂 thanks