Do not use a section which captures more than three columns in the layout. It looks bad on mobile.

TODO.md

@@ -1,3 +1,4 @@
+1. Do not use more than three columns unless necessary. It messes up layout on mobile.
 1. Move content to the center of the page
 2. Add horizontal menu that would cover 10 columns
 3. Show website banner along with tag line