tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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contain-html-bg-004.html (707B)

      1 <!doctype html>
      2 <html lang=en>
      3  <meta charset=utf-8>
      4  <title>CSS-contain test: style containment on html prevents background propagation</title>
      5  <link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
      6  <meta name=flags content="">
      7  <meta name=assert content="style containment on html prevents background propagation">
      8  <link rel="match" href="reference/contain-body-bg-001-ref.html">
      9  <link rel=help href="https://drafts.csswg.org/css-contain-2/#contain-property">
     10 
     11 <style>
     12 html, body, p {
     13    margin: 0;
     14    width: 300px;
     15    height: 200px;
     16 }
     17 p {
     18    background: white;
     19 }
     20 body {
     21    background: red;
     22 }
     23 html {
     24    contain: style;
     25 }
     26 </style>
     27 
     28 <p>Test passes if there is no red.