This example displays a bar chart of 80 randomly generated values, rendered as green bars with their numerical values appearing on hover. The visualization is built entirely with vanilla JavaScript and the SVG API, creating each rectangle and text element programmatically using `createElementNS`. The bars have a semi-transparent appearance that becomes fully opaque with a thicker stroke on mouseover, while the corresponding value label fades in using a CSS sibling selector. The chart fills the entire browser window by using `window.innerWidth` and `window.innerHeight` to set the SVG dimensions.