contentiskey on "New portfolio items coming up as upper case in nav menu"

Hi there,

I have entered a new 'Portfolio' page on my site. This new menu item is coming up in upper case in the navigation menu. Also, any menu items I have altered to try and solve the problem also appear in upper case. I have looked at the CSS and have tried to remove references to 'uppercase' but nothing has changed. The site is http://pollyharbison.com.au/ and while heading #1 (selected projects) should be in uppercase, headings #2 and #3 should be lower.

Could someone please help? Thank you.

did you try changing this CSS and found it did not work?

nav.vertical_menu > ul > li > a { font-size: 16px; font-weight: 500; letter-spacing: 0; text-transform: uppercase;/*chage this*/ padding: 10px 0;
}