refactor: css for coupon basket control

bin/frontend/controls/CouponCodeInput.css

+.quiqqer-coupons-field {
+    float: left;
+}
+
+div + .quiqqer-coupons-field {
+    margin-left: 20px;
+}
\ No newline at end of file

bin/frontend/controls/CouponCodeInput.js

@@ -15,7 +15,7 @@ define('package/quiqqer/coupons/bin/frontend/controls/CouponCodeInput', [
     'Mustache',
 
     'text!package/quiqqer/coupons/bin/frontend/controls/CouponCodeInput.html',
-    //'css!package/quiqqer/coupons/bin/frontend/classes/CouponCodeInput.css'
+    'css!package/quiqqer/coupons/bin/frontend/controls/CouponCodeInput.css'
 
 ], function (QUIControl, QUILoader, CouponCodes, QUILocale, Mustache, template) {
     "use strict";
@@ -49,6 +49,8 @@ define('package/quiqqer/coupons/bin/frontend/controls/CouponCodeInput', [
             var self     = this;
             var lgPrefix = 'controls.frontend.CouponCodeInput.template.';
 
+            this.$Elm.addClass('quiqqer-coupons-field');
+
             this.$Elm.set('html', Mustache.render(template, {
                 labelInput   : QUILocale.get(lg, lgPrefix + 'labelInput'),
                 submitBtnText: QUILocale.get(lg, lgPrefix + 'submitBtnText')
@@ -64,8 +66,9 @@ define('package/quiqqer/coupons/bin/frontend/controls/CouponCodeInput', [
                 }
             });
 
-            var SubmitBtn = this.$Elm.getElement('button.quiqqer-coupons-couponcodeinput-btn');
-            SubmitBtn.addEvent('click', function (event) {
+            this.$Elm.getElement(
+                'button.quiqqer-coupons-couponcodeinput-btn'
+            ).addEvent('click', function (event) {
                 event.stop();
                 self.$submit();
             });