couple of fixes

Author: rachelandrew

learn/values-units/percentage.html

@@ -61,8 +61,8 @@
 <div class="box px">I am 200px wide</div>
 <div class="box percent">I am 40% wide</div>
 <div class="wrapper">
-    <div class="box px">I am 200px wide</div>
-    <div class="box percent">I am 40% wide</div>
+  <div class="box px">I am 200px wide</div>
+  <div class="box percent">I am 40% wide</div>
 </div>
     </textarea>
 

learn/values-units/position.html

@@ -22,7 +22,7 @@
         width: 400px;
         background-image: url(star.png);
         background-repeat: no-repeat;
-        background-position: 40px right;
+        background-position: right 40px;
       }
     </style>
   </head>
@@ -38,7 +38,7 @@
   width: 400px;
   background-image: url(star.png);
   background-repeat: no-repeat;
-  background-position: 40px right;
+  background-position: right 40px;
 }
     </textarea>