优化checkout支付页面

app/code/Rokanthemes/OnePageCheckout/view/frontend/web/template/billing-address.html

+<style>
+@media (min-width: 1024px){
+        .action-update-cancel{
+            margin-left: 0%;
+        }
+}
+@media (max-width: 1024px){
+    .action-update-cancel{
+        height: 120px;
+    }
+
+    .action-update,action-cancel{
+        margin-bottom: 13%;
+        margin-right: 20%;
+    }
+}
+</style>
 <div class="checkout-billing-address">
 
     <div class="billing-address-same-as-shipping-block field choice" data-bind="visible: canUseShippingAddress()">
@@ -12,7 +29,7 @@
     <fieldset class="fieldset" data-bind="visible: !isAddressDetailsVisible()">
         <!-- ko template: 'Magento_Checkout/billing-address/list' --><!-- /ko -->
         <!-- ko template: 'Magento_Checkout/billing-address/form' --><!-- /ko -->
-        <div class="actions-toolbar">
+        <div class="actions-toolbar action-update-cancel" >
             <div class="primary">
                 <button class="action action-update" type="button" data-bind="click: updateAddress">
                     <span data-bind="i18n: 'Update'"></span>