Use CSS in custom headers.
diff --git a/doxygen/header_subset.html b/doxygen/header_subset.html
index 1579e5d..e7f0010 100644
--- a/doxygen/header_subset.html
+++ b/doxygen/header_subset.html
@@ -1,9 +1,11 @@
-<html><head><title>Mesa Source Code Documentation</title>
+<html>
+<head><title>Mesa Source Code Documentation</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head>
-<body><center>
-<a href="../core_subset/index.html">Mesa Core</a>
-<a href="../math_subset/index.html">math</a>
-<a href="../miniglx/index.html">MiniGLX</a>
-<a href="../radeon_subset/index.html">radeon_subset</a>
-</center>
+<body>
+<div class="qindex">
+<a class="qindex" href="../core_subset/index.html">Mesa Core</a> |
+<a class="qindex" href="../math_subset/index.html">math</a> |
+<a class="qindex" href="../miniglx/index.html">MiniGLX</a> |
+<a class="qindex" href="../radeon_subset/index.html">radeon_subset</a>
+</div>