Set Sub-menu items to be greater than 180px

So this is what im working with: https://imagebin.ca/v/3TgXifNqgct2

I have a “Retail Mouthguards” sub-menu with a “Category” column. In the category column are a bunch of sub-categories. However, no matter what widths I put on the Category column or the sub-category items they are still limited by the following css:

.jm-megamenu .level2 li a.mega {
    width: 180px;
}

I can’t seem to find any setting to allow the links to the full extent of their parent column. This is causing word-wrapping of the sub-category names and I hate how that looks. 

I realize that I could create a custom css file to override this but I figured there was just a setting I was missing. Any help would be appreciated.