Update CSS tests to revision b9afbd8c2c8ef5e824f276b0c3d44143c01d98aa

tests/wpt/css-tests/css-flexbox-1_dev/xhtml1/reference/support/test-style.css

@@ -1,8 +1,8 @@
       #test01, #test02, #test03{
         width: 50px;
         height: 50px;
-	text-align:center;
-	font-size: 20px;
+        text-align:center;
+        font-size: 20px;
       }
       #test{
         background: #ff0000;

tests/wpt/css-tests/css-flexbox-1_dev/xhtml1/support/test-style.css

@@ -1,8 +1,8 @@
       #test01, #test02, #test03{
         width: 50px;
         height: 50px;
-	text-align:center;
-	font-size: 20px;
+        text-align:center;
+        font-size: 20px;
       }
       #test{
         background: #ff0000;

tests/wpt/css-tests/css-flexbox-1_dev/xhtml1/ttwf-reftest-flex-wrap-reverse.xht

@@ -16,6 +16,7 @@
 	margin: 1em 0;
 	border: 1px solid black;
 	width: 20em;
+	height: 6.5em;
         }
 	span {
 	display: inline-block;

tests/wpt/css-tests/css-flexbox-1_dev/xhtml1/ttwf-reftest-flex-wrap.xht

@@ -16,6 +16,7 @@
 	margin: 1em 0;
 	border: 1px solid black;
 	width: 20em;
+	height: 6.5em;
         }
 	span {
 	display: inline-block;