Move # Nav-Content Menu to the left

Theme: Arrias Theme 1.5.3

The horizontal navigation menu at the top of the website is set too far to the right. Adding new URLs to the menu pushes the RSS, YouTube, Facebook, Twitter buttons too far to the right and become invisible.

I’d like to place the navigation to align to the left so that I can fit everything.

Example:

This is how the navigation looks now:

https://pic.twitter.com/hrTJBmuvYW

This is how I wish it to be aligned like:

pic.twitter.com/7OfP9i1kq5

I am assuming this is the code. What should I change or add to the code to move the nav text to the left?:

#nav-content {
margin: 0px auto;
margin-top: 0px;
margin-right-value: auto;
margin-bottom: 0px;
margin-left-value: auto;
margin-left-ltr-source: physical;
margin-left-rtl-source: physical;
margin-right-ltr-source: physical;
margin-right-rtl-source: physical;
width: 1008px;
height: 32px;
}