diff --git a/gestioncof/static/css/cof.css b/gestioncof/static/css/cof.css
index 5db3c9bb..b8f6e7f8 100644
--- a/gestioncof/static/css/cof.css
+++ b/gestioncof/static/css/cof.css
@@ -825,6 +825,16 @@ input#search_autocomplete:focus {
  color: #343a4a;
 }
 
+input[type=number][readonly] {
+    -moz-appearance:textfield;
+}
+
+input[type=number][readonly]::-webkit-inner-spin-button,
+input[type=number][readonly]::-webkit-outer-spin-button {
+    -webkit-appearance: none;
+    margin: 0;
+}
+
 .autocomplete {
     margin-bottom:5px;
 }