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  <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
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  <link rel="author" title="GÃ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <link rel="help" href="https://www.w3.org/TR/css3-values/#viewport-relative-lengths">
  <link r