Fix navbar overlapping title

As the navbar has been made fixed we have to compensate it with a little
top padding for the body as the size of the navbar isn't taken into
account when it is turned into fixed.

Ref: https://stackoverflow.com/a/11124805/5614968

Author: sivaraam

style.css

@@ -2,6 +2,7 @@
 
 body {
     text-align: center;
+    padding-top: 50px;
 }
 
 .bg-primary {