All the content on the site is bundled in the javascript -- even all the text. The only markup in the html file's body is an empty DIV. That's ~55 KiB of minif

All the content on the site is bundled in the javascript -- even all the text. The only markup in the html file's body is an empty DIV. That's ~55 KiB of minified JavaScript (roughly, Act I of Macbeth in size) for a page with 82 words. Modern web development sometimes goes out of its way to be overcomplicated. Ironically, the animation is all being done with CSS.