More cleanup and fix custom css on subsites

css/main.css

@@ -2,38 +2,23 @@ body {
     color: white;
     padding: 0px;
     margin: 0px;
+    background-attachment: fixed;
+    background-size: cover;
 }
 
 hr {
     border: 0;
     height: 1px;
-    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0));
+    background-color: white;
     margin-top: 35px;
     margin-bottom: 35px;
 }
 
-.center {
-    margin-left: auto;
-    margin-right: auto;
-}
-
-.shadowed {
-    -webkit-box-shadow: 10px 10px 5px 0px rgba(0, 0, 0, 0.75);
-    -moz-box-shadow: 10px 10px 5px 0px rgba(0, 0, 0, 0.75);
-    box-shadow: 10px 10px 5px 0px rgba(0, 0, 0, 0.75);
-}
-
 .container {
     padding: 25px;
 }
 
-.dark {
-    background-color: #121314;
-    padding: inherit;
-}
-
-.light {
-    background-color: #1c1c1f;
+div {
     padding: inherit;
 }