[NaCl SDK Docs] Update CSS for docs.

native_client_sdk/src/doc/_static/css/doxygen.css

Index: native_client_sdk/src/doc/_static/css/doxygen.css
diff --git a/native_client_sdk/src/doc/_static/css/doxygen.css b/native_client_sdk/src/doc/_static/css/doxygen.css
new file mode 100644
index 0000000000000000000000000000000000000000..d0335c12a26d284dac069ec6388c55d2e374d46e
--- /dev/null
+++ b/native_client_sdk/src/doc/_static/css/doxygen.css
@@ -0,0 +1,34 @@
+/* Copyright (c) 2014 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+/*
+ * The #doxygen-ref is an id tag which encompasses code generated by doxygen
+ * and allows override of standard html tags while not affecting the rest
+ * of the page such as sidebars.
+ */
+
+#doxygen-ref table {
+  margin: 0;
+}
+
+#doxygen-ref td {
+  border: none;
+}
+
+#doxygen-ref tr {
+  border: none;
+}
+
+#doxygen-ref .memitem {
+  margin-top: 2em;
+}
+
+#doxygen-ref .memproto {
+  background-color: #e1e1e4;
+  border: 1px solid #e1e1f4;
+  font-weight: bold;
+  border-radius: 8px;
+  -moz-border-radius: 8px;
+  -webkit-border-radius: 8px;
+}