fix(NavBar): changed the backgroudn color of the navbar from transparent to black because GiThub Pages cannot blur it yet

Author: Roméo Maignal

src/components/NavigationBar.css

@@ -9,7 +9,8 @@
 }
 
 .navbar.scrolled {
-    background: rgba(3, 3, 3, 0.60);
+    /* background: rgba(3, 3, 3, 0.60); */ /* The background blur doesn't work when the website is published on github pages. For now this is commented out but once we understand the issue we can uncomment it */ 
+    background: rgba(3, 3, 3, 1);
     backdrop-filter: blur(16px);
     -webkit-backdrop-filter: blur(16px);
     /* border-bottom: 1px solid var(--border); */