<!DOCTYPE html>
<html>
<head>
<title>This tests that there's no pixel gap between adjacent inlines when selected.</title>
<style>
  body {
    margin: 0px;
    color: rgba(255, 255, 255, 0);
    font-size: 16px;
  }
  ::selection {
    background: rgba(255, 0, 0, 0.9);
  }
</style>
</head>
<body>
<div id="container"><span>foo</span> foo</div>
<script>
  var range = document.createRange(); 
  range.selectNode(document.getElementById("container")); 
  window.getSelection().addRange(range);
</script>
</body>
</html>