more style fixes

_layouts/default.html

@@ -12,12 +12,18 @@
         <link rel="icon" href="/images/favicon.png">
         <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
         <script type="text/x-mathjax-config">
-              MathJax.Hub.Config({
-                  menuSettings: {
-                      zoom: "Click",
-                      zscale: "200%"
-                  }
-                });
+            MathJax.Hub.Config({
+                menuSettings: {
+                    zoom: "Click",
+                    zscale: "200%"
+                },
+                tex2jax: {
+                    inlineMath: [
+                        ['$','$'],
+                        ['\\(','\\)']
+                    ]
+                }
+            });
         </script>
         <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"> </script>
         <script src="/javascripts/respond.js"></script>
@@ -61,7 +67,8 @@
                 </div>
 
                 {{ content }}
-                <hr>
+
+                <hr class="clear">
                 <span class="credits left"><a href="http://validator.w3.org/check?uri=http%3A%2F%2Fgjankowiak.github.com{{ page.url | cgi_escape }}">Validate</a> HTML</span>
                 <span class="credits right">Hosted on GitHub Pages &mdash; Theme derived from <a href="http://twitter.com/#!/michigangraham">mattgraham</a> &mdash;
                 Powered by <a href="http://jekyllrb.com/">Jekyll</a>