hframe 0.4.1

Show HTML content "inside" your egui rendered application
Documentation 
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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body style="background-color: brown">
    <svg
      id="as-mask"
      width="500"
      height="500"
      xmlns="http://www.w3.org/2000/svg"
    >
      <defs>
        <mask id="mask" x="0" y="0" width="200" height="200">
          <rect x="0" y="0" width="200" height="200" fill="white" />
          <!-- Holes -->
          <rect x="50" y="50" width="30" height="30" fill="black" />
          <rect x="65" y="65" width="30" height="30" fill="black" />
        </mask>
      </defs>
      <rect
        x="0"
        y="0"
        width="200"
        height="200"
        fill="blue"
        mask="url(#mask)"
      />
    </svg>
    <div
      id="to-mask"
      style="background-color: aqua; width: 500px; height: 500px"
    >
      afff
    </div>
    <script>
      const svg = document.getElementById("as-mask").outerHTML;
      const div = document.getElementById("to-mask");
      div.style.mask = `url("data:image/svg+xml,${encodeURIComponent(svg)}")`;
      div.style.webkitMask = `url("data:image/svg+xml,${encodeURIComponent(
        svg
      )}")`;
      div.style.maskMode = "luminance";
      div.style.webkitMaskMode = "luminance";
    </script>
  </body>
</html>