Reduce padding for content wrapper.

More space for content.

Change-Id: Id0874e97944f70e6b102098f1a550e428f230b12
diff --git a/app/soc/content/less/gsoc/structure.less b/app/soc/content/less/gsoc/structure.less
index a2c81c5..6b66cc8 100644
--- a/app/soc/content/less/gsoc/structure.less
+++ b/app/soc/content/less/gsoc/structure.less
@@ -102,7 +102,7 @@
     margin-left: 0;
     background: white;
     overflow: hidden;
-    padding: 19px;
+    padding: 12px;
   }
 
   .block {