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+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>CSS Test: ::first-letter formatting</title>
+  <link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+  <link rel="match" href="first-letter-001-ref.html">
+  <link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-letter-styling">
+  <meta name="assert" content="Test checks that a floated ::first-letter follows the usual formating rules for floats.">
+  <style>
+  div {
+    font-size: 50px;
+    position: absolute;
+    left: 30px;
+    top: 50px;
+    background: red;
+  }
+  span {
+    background : white;
+  }
+  div::first-letter {
+    color: green;
+    background: green;
+    float: left;
+  }
+  </style>
+</head>
+<body>
+  <p>Test passes if there is a <strong>filled green rectangle</strong> and <strong>no red</strong>.</p>
+  <div>a<span>&nbsp;</span></div>
+</body>
+</html>