vant-css: use hairline classes instead of mixins

packages/vant-css/src/order-goods.css

@@ -1,17 +1,15 @@
-@import "./mixins/border_retina.css";
+@import './common/var.css';
 
 .van-order-goods {
-  background-color: #fff;
+  background-color: $white;
 
   &-card {
     margin-left: -15px;
-    position: relative;
     background-color: #fafafa;
 
-    &:not(:first-child),
-    &__delivery {
+    &:not(:first-child) {
       &::after {
-        @mixin border-retina (top);
+        border-top-width: 1px;
       }
     }
 
@@ -29,14 +27,14 @@
     }
 
     &__tag-green {
-      color: #fff;
-      background-color: #4b0;
+      color: $white;
+      background-color: $green-wx;
     }
 
     &__tag-red {
-      color: #ed5050;
+      color: $gray;
       padding: 5px 8px;
-      border: 1px solid #ed5050;
+      border: 1px solid $gray;
     }
 
     &__delivery {
@@ -44,7 +42,7 @@
       background-color: transparent;
 
       .van-cell__value {
-        color: #666;
+        color: $gray-darker;
       }
     }
 
@@ -76,17 +74,17 @@
     &__message {
       width: 100%;
       height: 100%;
-      background-color: #f8f8f8;
+      background-color: $background-color;
 
       h2 {
-        color: #999;
+        color: $gray-dark;
         font-size: 12px;
         line-height: 18px;
         padding: 5px 0 5px 10px;
       }
 
       ul {
-        background-color: #fff;
+        background-color: $white;
       }
 
       p,
@@ -107,10 +105,9 @@
       li {
         display: flex;
         padding: 0 10px;
-        position: relative;
 
         &:not(:last-child)::after {
-          @mixin border-retina (bottom);
+          border-bottom-width: 1px;
         }
 
         img {
@@ -124,14 +121,9 @@
   &-empty {
     margin-left: -15px;
     text-align: center;
-    position: relative;
-
-    &::after {
-      @mixin border-retina (top);
-    }
 
     p {
-      color: #999;
+      color: $gray-dark;
       padding: 0 10px;
       font-size: 14px;
       line-height: 20px;
@@ -148,7 +140,7 @@
       margin: 15px 0;
       padding: 0 10px;
       line-height: 39px;
-      border-color: #e5e5e5;
+      border-color: $gray-light;
     }
   }
 
@@ -167,7 +159,7 @@
     }
 
     a {
-      color: #333;
+      color: $text-color;
       font-size: 14px;
     }
 
@@ -179,13 +171,12 @@
 
   &-message {
     textarea {
-      color: #666;
+      color: $gray-darker;
       padding: 0;
       width: 100%;
       height: 22px;
       border: none;
       resize: none;
-      outline: none;
       display: block;
       font-size: 14px;
       line-height: 22px;
@@ -197,7 +188,7 @@
     }
 
     p {
-      color: #666;
+      color: $gray-darker;
       text-align: left;
     }
 
@@ -208,7 +199,7 @@
 
   &-price {
     .van-cell__value {
-      color: #f44;
+      color: $red;
     }
   }
 }