_image_background.scss in patterns-0.1.2

- old
+ new

@@ -4,6 +4,25 @@
   background: $image_url no-repeat center center fixed;
   -webkit-background-size: cover;
   -moz-background-size: cover;
   -o-background-size: cover;
   background-size: cover;
+}
+
+@mixin image_background_contaner {
+  position:fixed;
+  top:-50%;
+  left:-50%;
+  width:200%;
+  height:200%;
+
+  & > img {
+    position:absolute;
+    top:0;
+    left:0;
+    right:0;
+    bottom:0;
+    margin:auto;
+    min-width:50%;
+    min-height:50%;
+  }
 }
\ No newline at end of file