Set smooth scroll behaviour

Author: DavidOliver

assets/css/_html.css

@@ -39,6 +39,10 @@
 @import "tabset.css";
 @import "preview.css";
 
+html {
+  scroll-behavior: smooth;
+}
+
 body:not(.dark) .content-inner img[src*="#gh-dark-mode-only"],
 body.dark .content-inner img[src*="#gh-light-mode-only"] {
   display: none;