diff --git a/README.md b/README.md
index 7602138..7abf9b4 100644
--- a/README.md
+++ b/README.md
@@ -200,8 +200,8 @@ Visit [HTMLy Demo](http://demo.htmly.com).
 
 Credit
 ------
-People who give references and inspiration for HTMLy:
 * [Martin Angelov](http://tutorialzine.com)
+* [Xiaoying Riley](http://themes.3rdwavemedia.com)
 
 Contribute
 ----------
diff --git a/themes/blog/css/styles.css b/themes/blog/css/styles.css
index 3674b41..d591ccf 100644
--- a/themes/blog/css/styles.css
+++ b/themes/blog/css/styles.css
@@ -139,7 +139,7 @@ a.dotted-link:hover {
   color: #49515a;
 }
 pre {
-  margin:10px 0;
+  margin:1em 0;
 }
 
 /*-------------------------
@@ -384,19 +384,19 @@ iframe {
   margin:0;
 }
 .post .item img {
-  margin: 30px 0px;
+  margin: 1em 0px;
 }
 .post .featured-image img {
   margin-top:0;
 }
 .post .item .info, .post .item .desc {
-  margin-bottom: 30px;
+  margin-bottom: 1em;
 }
 .inpost .post .item .desc {
   margin:0;
 }
 .post .featured {
-  margin-bottom: 30px;
+  margin-bottom: 1em;
 }
 .post .featured-image {
   position: relative;
@@ -576,6 +576,10 @@ ul.month {
   .project-image {
     margin-bottom: 15px;
   }
+  .main-nav .navbar-toggle, #navbar {
+    float:none!important;
+	text-align:Center;
+  }
 }
 /* Small devices (tablets, 768px and up) */
 /* Medium devices (desktops, 992px and up) */