update padding for select component

src/components/input/_input.scss

@@ -70,10 +70,10 @@
 }
 
 // Text input widths
-@include input-width('ons-input--w-{x}');
+@include input-width($class-name: 'ons-input--w-{x}');
 
 // Number input widths
-@include input-width('ons-input-number--w-{x}', 0.54rem);
+@include input-width($class-name: 'ons-input-number--w-{x}', $char-width: 0.54rem);
 
 .ons-input--postcode {
     max-width: input-width-calc($chars: 5, $num-chars: 2, $spaces: 1);
@@ -92,7 +92,7 @@
         url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 11.75 7.7'%3E%3Cpath fill='currentColor' d='m1.37.15 4.5 5.1 4.5-5.1a.37.37 0 0 1 .6 0l.7.7a.45.45 0 0 1 0 .5l-5.5 6.2a.37.37 0 0 1-.6 0l-5.5-6.1a.64.64 0 0 1 0-.6l.7-.7a.64.64 0 0 1 .6 0Z'/%3E%3C/svg%3E")
         no-repeat center right 10px;
     background-size: 1rem;
-    padding: 0.39rem 2rem 0.39rem $input-padding-horizontal;
+    padding: 0.25rem 2rem 0.25rem $input-padding-horizontal;
 
     &::-ms-expand {
         display: none;