Custom navigation button with folder issue

Site URL: https://plenitudpr.org

Hi!

I have a multilingual site with 2 folders for each language, 1 folder on the primary navigation and 1 folder on the secondary navigation. I wanted to add a call to action button to the right of the header and added this code.

// Last 2nd Nav Item Orange Button //
.Header-nav.Header-nav--secondary a:last-child {
    background-color: #ffffff; /* button color */
      color: #ea7c3a; /* text color */
      border: 2px solid #ea7c3a;
    padding: 15px !important;
    border-radius: 2px,  
}

// Last 2nd Nav Item Orange Button HOVER //
.Header-nav.Header-nav--secondary a:last-child {
  background-color: #fafafa;
  color: #ea7c3a;
  border: 2px solid #ea7c3a;
}
.Header-nav.Header-nav--secondary a:last-child:hover {
  background-color: #ea7c3a;
  color: white;
}

The button turned out great, however, the last item inside the folder I have on the secondary navigation is displaying the same formatting. How can I fix this so that the button formats only show on the call to action (secondary navigation item), and not inside the last folder item.

Any help is greatly appreciated!