Improving header styles

src/base.scss

@@ -9,16 +9,15 @@
 }
 
 :root {
-    // --primary: #1e88e5; 
     --primary: #196eb9;
-    // or 196eb9 => Needs further investigations
+    // 1e88e5 or 196eb9 => Needs further investigations
     --on-primary: white;
     --secondary: #d8701b;
     --on-secondary: black;
     --error: rgb(255, 0, 0);
+    --primary-transparent: #196eb917
 }
 
-$default-font-size: 1rem;
 $primary: var(--primary) !default;
 $on-primary: var(--on-primary) !default;