Add reftest for width of first-letter (#18882)
diff --git a/css/css-pseudo/first-letter-width-ref.html b/css/css-pseudo/first-letter-width-ref.html
new file mode 100644
index 0000000..4a55618
--- /dev/null
+++ b/css/css-pseudo/first-letter-width-ref.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<html lang="en">
+<head>
+ <title>initial-letter width test</title>
+ <style>
+ span {
+ position: absolute;
+ color: transparent;
+ }
+ #control {
+ background-color: green;
+ }
+ </style>
+</head>
+<body>
+ <p>There should be no red</p>
+ <span id="control">Test.</span>
+</body>
+</html>
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diff --git a/css/css-pseudo/first-letter-width.html b/css/css-pseudo/first-letter-width.html
new file mode 100644
index 0000000..a912e76
--- /dev/null
+++ b/css/css-pseudo/first-letter-width.html
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+<!DOCTYPE html>
+<meta charset="utf-8">
+<html lang="en">
+<head>
+ <title>initial-letter width test</title>
+ <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=362880">
+ <link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-letter-styling">
+ <link rel="match" href="first-letter-width-ref.html">
+ <meta name="assert" content="The width of an element with first-letter styling should render correctly.">
+ <style>
+ div {
+ position: relative;
+ }
+ span {
+ position: absolute;
+ color: transparent;
+ }
+ #control {
+ background-color: green;
+ }
+ #test {
+ background-color: red;
+ line-height: 1;
+ top: 1px;
+ }
+ #test::first-letter {
+ text-transform: uppercase;
+ }
+ </style>
+</head>
+<body>
+ <p>There should be no red</p>
+ <div>
+ <span id="test">Test</span>
+ <span id="control">Test.</span>
+ </div>
+</body>
+</html>
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