centering

_includes/head.html

@@ -28,6 +28,9 @@
   <style>
     center {
       text-align: center;
+      display: block;
+      margin-left: auto;
+      margin-right: auto
       } 
   </style>
   <script>

index.html

@@ -3,7 +3,6 @@ layout: default
 title: Home
 ---
 <div class="center">
-  <p>
   <a href="https://github.com/Obrary/{{ site.github.project_title }}/archive/master.zip">
   <img src="{{ site.baseurl }}{{ site.github.project_title | prepend:'/' }}/public/download-free-design-file.png" alt="Download free design package" align="middle"></a>
   <br>This .zip file contains all of the CAD, interchange (.dxf, .pdf, etc) and CAM files for the {{ site.github.project_title }}