Put the mono version of an thumb first in the sprited image

So that when the image loads the colour version isn't visible until the mono version loads

content/screen.sass

@@ -254,20 +254,20 @@ a
 
   ul
     display: block
-    // width: 5000px
-    height: 100px
+    height: 75px
     overflow: hidden
+    margin-top: 1em
 
   li
     float: left
     overflow: hidden
-    margin: 1em 0 0 1em
+    margin: 0 0 0 1em
     display: block
     position: relative
     height: 75px
     width: 75px
     border: 1px solid #ccc
-    background: url(/images/photos.jpg) no-repeat 0 0
+    background: url(/images/photos.jpg) no-repeat 0 -75px
 
     &:first-child
       margin-left: 2em
@@ -275,10 +275,8 @@ a
     img
       -webkit-transition: opacity 500ms ease-out
       position: absolute
-      top: -75px
 
       &:hover
-        //top: 0
         opacity: 0
 
   a.more