<!DOCTYPE html> <meta charset="UTF-8"> <title>CSS Values and Units Test: vh unit and vw unit (basic)</title> <!-- Original test is: https://chromium.googlesource.com/chromium/src/+/c825d655f6aaf73484f9d56e9012793f5b9668cc/third_party/WebKit/LayoutTests/css3/calc/viewport-unit.html --> <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <link rel="help" href="https://www.w3.org/TR/css3-values/#viewport-relative-lengths"> <link rel="match" href="reference/viewport-unit-011-ref.html"> <style> body { margin: 0; height: 100vh; } div { width: calc(50vw + 10%); height: calc(50vh + 10%); background-color: green; } </style> <div> </div>