improved simplenews form display

web/themes/custom/materiotheme/assets/styles/main.scss

@@ -2562,7 +2562,7 @@ footer[role="contentinfo"]{
           background-color: $color-base;
           border-radius: 5px;
           color: #fff;
-          padding: 0.7em 1em;
+          padding: 0.45em 1em;
           font-weight: 700;
         }
       }