This tutorial will show you how to edit Drop-Down menus width in Joomla Framewrok templates.
1. Let us change the drop-down menu width for the Services button.
2. Go to Menus > Main menu (your default menu marked with the star)
3. Choose your parent menu button which you would like to change the drop-down width for.
4. Click on Fusion menu options and set your desired width value in "Drop-Down Width (px)" field.
5. Check your website.
Feel free to check the detailed video tutorial below:Joomla 2.5.x. How to change submenus width,