Update css.

app/assets/stylesheets/ask/ask.css

@@ -57,6 +57,9 @@
   float: right;
   margin-right: 1em;
 }
+.ask-question-form .datetime_selector {
+  white-space: pre;
+}
 /*驗證碼*/
 .text-error {
   color: #b94a48;