move box-sizing to both textarea AND input

core/style.css

@@ -50,6 +50,9 @@ table {
 textarea {
 	resize: vertical;
 	width: 100%;
+}
+
+textarea, input {
 	-webkit-box-sizing: border-box;
 	-moz-box-sizing: border-box;
 	box-sizing: border-box;