diff --git a/css/style.css b/css/style.css
index 0c1a9a859b251f9b60221552494dc6c2cf653c59..aca929511911772e45eba5e867a940a271e916ed 100644
--- a/css/style.css
+++ b/css/style.css
@@ -52,6 +52,7 @@ input::-webkit-inner-spin-button {
 
 /* Firefox */
 input[type="number"] {
+  -moz-appearance:textfield;
   appearance: textfield;
 }