Browser defaults have a legacy and they&#x27;re not easy to change without disruption.  Just because they&#x27;re less than ideal isn&#x27;t an valid excuse to neglect your content presentation.<p>The author seems to have concerns for UX because his page isn&#x27;t just HTML.  He put some CSS on the nav header, used some HTML5 semantic elements, some Aria roles, and added a viewport header element for mobile scaling.  Sadly his concerns were passing as 1&#x2F;3 of his CSS is rendered moot, and his desire for a semantic page was abandoned quickly after implementing his navigation and footer.<p>His page&#x27;s UX is improved dramatically by adding 2 simple CSS rules (margin, max-width).  If those rules add too many bytes to the page he could convert his navigation divs to a proper unorder list and get some bytes back and make his page more semantic to boot.<p>His page is just a drive by attempt at standards and it&#x27;s lazy.