Anchor my main navigation buttons to the right - please help

Site URL: http://hbt.com.au

Could anyone help me out with some code to move the buttons to the right side of my header? I had to inject code to make two buttons from pages in my main navigation but I'd like them to sit on the right side of the header while the remaining items (not buttons) stay on the left. 

Site is password protected so if you need to have a look please let me know and i'll hand it over. 

The code I've used for the buttons is as follows: 

Quote

 

// 2 Navigation Buttons //

.header-nav-item:nth-child(5) a, .header-nav-item:nth-child(6) a {
  background: #000000 !important;
  color: #FFFFFF !important;
  width: 120px;
  border-radius: 10px;
  text-align: center !important;
}

// Navigation Padding //

.header-nav-item a {
  padding: 10px !important;
}

// Active Navigation Line //

.header-nav-item--active a {
  background-image: none !important;
}

 

Hi,

What is access password?

Do you use Personal or Business Plan?