popup.sass in unpoly-rails-0.60.0

- old
+ new

@@ -1,8 +1,7 @@
 $stratum: 20000
 
 .up-popup
   z-index: $stratum
-  position: absolute
   background-color: #fff
   padding: 15px
   box-shadow: 0 0 4px rgba(0, 0, 0, 0.3)