text: <!DOCTYPE HTML>
  <html>
  <head>
  <title>Pixel rounding testcase</title>
  <style type="text/css">
  
  html, body { margin: 0; border: none; padding: 0; }
  
  body > div { margin: 10px; height: 80px; position: relative; }
  
  body > div > div {
      position: absolute; top: -0.5px; left: 0; height: 11px; width: 10px;
  }
  
  body > div > div { background: green; }
  
  .tl { top: 19.5px; }
  .tr { margin-top: 40px; }
  .bl { left: 20px; }
  .br { margin-left: 40px; }
  
  div.one > div.tl { border-top-left-radius: 1px; }
  div.one > div.tr { border-top-right-radius: 1px; }
  div.one > div.bl { border-bottom-left-radius: 1px; }
  div.one > div.br { border-bottom-right-radius: 1px; }
  div.four > div.tl { border-top-left-radius: 4px; }
  div.four > div.tr { border-top-right-radius: 4px; }
  div.four > div.bl { border-bottom-left-radius: 4px; }
  div.four > div.br { border-bottom-right-radius: 4px; }
  
  </style>
  </head>
  <body>
  
  <div class="one">
  <div></div>
  <div class="tl"></div>
  <div class="tr"></div>
  <div class="bl"></div>
  <div class="br"></div>
  <div class="tl tr"></div>
  <div class="tl bl"></div>
  <div class="tl br"></div>
  <div class="tr bl"></div>
  <div class="tr br"></div>
  <div class="bl br"></div>
  <div class="tl tr bl"></div>
  <div class="tl tr br"></div>
  <div class="tl bl br"></div>
  <div class="tr bl br"></div>
  <div class="tl tr bl br"></div>
  </div>
  
  <div class="four">
  <div></div>
  <div class="tl"></div>
  <div class="tr"></div>
  <div class="bl"></div>
  <div class="br"></div>
  <div class="tl tr"></div>
  <div class="tl bl"></div>
  <div class="tl br"></div>
  <div class="tr bl"></div>
  <div class="tr br"></div>
  <div class="bl br"></div>
  <div class="tl tr bl"></div>
  <div class="tl tr br"></div>
  <div class="tl bl br"></div>
  <div class="tr bl br"></div>
  <div class="tl tr bl br"></div>
  </div>
  
  </body>
  </html>
  