<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <link rel="stylesheet" href="simple.css"/>
  <link rel="stylesheet" href="media-rules.css"/>
  <!-- This stylesheet is needed to ensure we cover the fix for Bug 1779043 -->
  <style>
    div {
      color: salmon;
    }
  </style>
  <style>
    @media screen {
      div {
        outline: 1px solid tomato;
      }

      @supports (display: flex) {
        @media (1px < height < 10000px) {
          div {
            display: flex;
          }
        }
      }
    }

    @layer myLayer {}
    @container (min-width: 1px) {
      body {
        div {
          color: gold;
          @supports selector(&) {
            &:hover {
              color: yellowgreen;
            }
          }
        }
      }
    }
  </style>
</head>
<body>
  <div>
    Testing style editor media sidebar
  </div>
</body>
</html>
