Use auto for placeholder value

hail2u · hail2u · commit bb70ca813d3b · 2016-06-28T12:21:25.000+09:00
diff --git a/test/test.css b/test/test.css
@@ -412,7 +412,7 @@
 .pseudo::inactive-selection,
 .pseudo::spelling-error,
 .pseudo::grammer-error {
-  display: block;
+  display: auto;
 }
 
 .regions:region {
diff --git a/test/test.html b/test/test.html
@@ -456,7 +456,7 @@
 .pseudo::inactive-selection,
 .pseudo::spelling-error,
 .pseudo::grammer-error {
-  display: block;
+  display: auto;
 }
 </style>
 <style>
