Add a new widget to front page difficulites

I'm trying to add a new text widget that includes a simple div container with a fixed background image and text. Instead of stacking the widget vertically, it displays side by side or behind the previous widget. How do I get my new front page widgets to display on top of another?

new-widget error.jpg

I'm trying to add a new text widget that includes a simple div container with a fixed background image and text. Instead of stacking the widget vertically, it displays side by side or behind the previous widget. How do I get my new front page widgets to display on top of another?

Could you please provide me with a URL to your website, either here or via PM (click the “Private Message” text underneath my avatar) so that I may analyze it? It is a lot easier for us to diagnose issues when we have a live site to examine.