changed background-color of sidebar to blue

src/app/app.component.css

@@ -6,6 +6,7 @@
   margin-top: 10px;
   bottom: 0;
   opacity: 95%;
+  background: rgba(34, 129, 247, 0.8);
 }
 
 .nav a {
@@ -14,7 +15,7 @@
 
 /* show curso position on link */
 .nav a:hover:not(.active) {
-    font-size: 1.15em;
+    font-size: 1.1em;
   }
 
 /* show content beneath sidebar */