Widget boarder too wide for website

Hi ohorses,
CSS styling is outside of the scope of the plugin. If you found a solution using Firebug, you should apply it on your theme’s style.css, by modifying or overriding it, and/or if your theme adds styles in a dynamic way, you’ll probably have a CSS admin panel in your theme options.
When you write css rules ensure that they are valid. I.e. a rule like margin: 0 6 0px; is not valid because the 6 lacks the unit of measure.

Since you are using a slider also ensure that the slider width is properly set.

If you’re having issues I’d recommend to contact the theme author or the slider plugin author.