some style modify

@@ -8,6 +8,8 @@ var $ = require('yoho-jquery');
 var Cart = require('./cart/cart');
 var Stepper = require('./cart/stepper');
 
+require('../common/return-top');
+
 $(function() {
     var $this;
     var editable = true;

@@ -150,6 +150,7 @@ summary {
 html,
 body {
     font-family: BrownStd, "黑体";
+    color: #1b1b1b;
 }
 
 .clearfix {
@@ -173,7 +174,7 @@ img {
 a {
     outline: none;
     text-decoration: none;
-    color: #000;
+    color: #1b1b1b;
 }
 
 *:focus {

@@ -672,6 +672,7 @@
     .invoice-content-radio {
         display: inline-block;
         cursor: pointer;
+        width: 115px;
     }
 
     .row {
@@ -680,6 +681,11 @@
 
         .iconfont {
             font-size: 16px;
+            color: #e0e0e0;
+        }
+
+        .checked {
+            color: #1b1b1b;
         }
 
         .input {