The viewport and its units To size something as tall as the viewport, you can use the vw and vh units. vw = 1% of the width of the viewport size. vh = 1% of the height of the viewport size. Give an element a width of 100vw and a height of 100vh, and it will cover the viewport entirely. A light blue element set to be 100vw by 100vh, covering the entire viewport. The viewport itself is indicated usi

