Docs: Making source.android.com headers match those of developer.android.com

Bug: 17814801
Change-Id: I128a76b32b0d92118f621062c62d72460313f4d6
diff --git a/tools/droiddoc/templates-sac/assets/css/default.css b/tools/droiddoc/templates-sac/assets/css/default.css
index 0d9e601..c1a0c19 100644
--- a/tools/droiddoc/templates-sac/assets/css/default.css
+++ b/tools/droiddoc/templates-sac/assets/css/default.css
@@ -1016,12 +1016,13 @@
 }
 h1 {
     color:#333;
-    font-size: 22px;
-    margin: 20px 0 20px;
+    font-size: 34px;
+    margin: 36px 0 27px;
     padding:0 0 10px;
+    font-weight:300;
 }
 h1, h2 {
-    line-height: 32px;
+    line-height: 30px;
 }
 h1.short {
   margin-right:320px;
@@ -1030,35 +1031,41 @@
   margin-right:320px;
 }
 h1.super {
-    font-size: 37px;  
+    font-size: 37px;
 }
 h2 {
     color:#333;
-    font-size: 20px;
-    margin: 20px 0 20px;
+    font-size: 26px;
+    margin: 32px 0 20px;
     padding:0;
+    font-weight:300;
 }
 h3 {
     color:#333;
-    font-size: 18px;
+    font-size: 21px;
+    font-weight:400;
+    margin:21px 0 14px 0;
 }
 h3, h4 {
-    color:#333;
-    line-height: 20px;
-    margin: 10px 0;
+    line-height: 21px;
 }
 h4 {
-  font-size: 16px;
+  font-size: 18px;
+  margin: 12px 0;
+  font-weight:500;
 }
 h5 {
-  font-size: 14px;  
+  font-size: 14px;
 }
 h5, h6 {
   margin: 5px 0;
 }
 h6 {
-  font-size: 12px;  
+  font-size: 12px;
 }
+
+
+
 hr { /* applied to the bottom of h2 elements */
   height: 1px;
   margin: 5px 0 20px;