This website either doesn't have a logout button or it's so well hidden that I couldn't find it. Another small possiblitiy is that it's been hidden by my Adblocker. But honestly, that's just bad or intentionally shady webdesign.
Edit: Found it after 10 minutes of searching. It's hidden in the menu at the top left corner. You have to click the menu, then click the triangle to make the logout button visible.
Edit: Found it after 10 minutes of searching. It's hidden in the menu at the top left corner. You have to click the menu, then click the triangle to make the logout button visible.