Black rounded squares tile a dark canvas in a dense, uniform grid. The visualization emphasizes the interplay of negative space and repetition, as the 84-pixel elements with soft corners create a rhythmic pattern across the viewport. Each square appears identical, making any subtle variations in lightness or shape imperceptible to the eye, reinforcing the title’s notion of invisibility. Built with vanilla JavaScript, the page dynamically appends 50 `div` elements to the body, styled entirely through embedded CSS. No external libraries are used; the effect relies purely on the DOM’s `createElement` method and flexbox wrapping to arrange the components.