Fixed dropdown menu won't obey right margin

Hey yall,

I am having issue with the dropdown menu on my nav bar. I want it to be the full width of the page minus a 14px margin each side and a 75px margin on top. For some reason, when I added the left and top margin, the dropdown reacted correctly and assumed the correct position. Yet when I add the right margin, the dropdown does not react and continues to overflow outside of the viewport. Any ideas on what I did wrong here? any suggestions would be appreciated!

Here is my site Read-Only: (Webflow - Constant Legal LLP)

Still struggling to fix this, anyone have any suggestions?