Fix number input button cursor on OS X Chrome

Fix the cursor style for Chrome's increment/decrement buttons on
`input[type="number"]. For certain `font-size` values of the `input`, it
causes the cursor style of the decrement button to change from `default`
to `text`.

Fix necolasgh-283

normalize.css

@@ -355,6 +355,17 @@ input[type="radio"] {
     padding: 0; /* 2 */
 }
 
+/**
+ * Fix the cursor style for Chrome's increment/decrement buttons. For certain
+ * `font-size` values of the `input`, it causes the cursor style of the
+ * decrement button to change from `default` to `text`.
+ */
+
+input[type="number"]::-webkit-inner-spin-button,
+input[type="number"]::-webkit-outer-spin-button {
+    height: auto;
+}
+
 /**
  * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
  * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome