Adding footer to the guide

Change-Id: If8d7df41faeb08eaafadfeba32c6915ba020df4c
diff --git a/styles/website.css b/styles/website.css
index 0957a64..42ecd82 100644
--- a/styles/website.css
+++ b/styles/website.css
@@ -11,4 +11,11 @@
     list-style: disc;
     text-indent: -1.5em;
     padding-left: 1.5em;
+}
+
+footer {
+    background: #f8f8f8;
+    border: 1px solid rgba(0, 0, 0, 0.07);
+    border-radius: 3px;
+    padding: 0 20px !important;
 }
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