From the article on the new viewport units, from the web.dev site maintained by Google[0]: "Caveats There‘s a few caveats to know about Viewport Units: - Non

From the article on the new viewport units, from the web.dev site maintained by Google[0]: "Caveats There‘s a few caveats to know about Viewport Units: - None of the viewport units take the size of scrollbars into account. On systems that have classic scrollbars enabled, an element sized to 100vw will therefore be a little bit too wide. This is as per specification." Notice that although the example in the above paragraph uses the well-known vw unit, the text explicitly says "none of the viewport units". [0] - https://web.dev/viewport-units/#caveats https://web.dev/viewport-units/#caveats