Docs: Better integrating HAL contents into source.android.com

Bug: 12067952, 12228517
Change-Id: I741e03ee9ee5070960dc7687f5f49e840b31a401
diff --git a/hal_doxygen.css b/hal_doxygen.css
new file mode 100644
index 0000000..6e63946
--- /dev/null
+++ b/hal_doxygen.css
@@ -0,0 +1,35 @@
+#header {
+  padding: 1.2em 0 0.2em 0;
+  margin: 10px 120px;
+}
+
+a:hover,
+acronym:hover {
+  color: #7aa1b0 !important; }
+
+a:link, a:visited {
+  color: #258aaf;
+  text-decoration: none;
+}
+
+a:focus, a:hover, a:active {
+  color: #33b5e5;
+  text-decoration: none;
+}
+
+a.toptab {
+  color: #333;
+  font-size: 16px;
+}
+
+a.devices {
+  color: #F80;
+  font-size: 16px;
+}
+
+hr.light {
+    border: 0;
+    height: 0;
+    border-top: 1px solid rgba(0, 0, 0, 0.1);
+    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
+}