Feat(提交订单)：UI调整（已完成）

assets/css/v12-style.less

@@ -59,13 +59,18 @@ each(@colors, {
     margin-bottom: @baseNum;
   }
   .v12-ma-@{i} {
-    margin: @baseNum;
+    margin-left: @baseNum;
+    margin-right: @baseNum;
+    margin-bottom: @baseNum;
+    margin-top: @baseNum;
   }
   .v12-mx-@{i} {
-    margin: 0 @baseNum;
+    margin-left: @baseNum;
+    margin-right: @baseNum;
   }
   .v12-my-@{i} {
-    margin:  @baseNum 0;
+    margin-bottom: @baseNum;
+    margin-top: @baseNum;
   }
   .v12-pt-@{i} {
     padding-top: @baseNum;
@@ -80,13 +85,18 @@ each(@colors, {
     padding-bottom: @baseNum;
   }
   .v12-pa-@{i} {
-    padding: @baseNum;
+    padding-top: @baseNum;
+    padding-bottom: @baseNum;
+    padding-right: @baseNum;
+    padding-left: @baseNum;
   }
   .v12-px-@{i} {
-    padding: 0 @baseNum
+    padding-right: @baseNum;
+    padding-left: @baseNum;
   }
   .v12-py-@{i} {
-    padding: @baseNum 0
+    padding-top: @baseNum;
+    padding-bottom: @baseNum;
   }
   .generateMarginAndPadding(@n, (@i + 1))
 }
@@ -133,7 +143,11 @@ each(@colors, {
 }
 .v12-justify-start{
   display: flex;
-  justify-content: start;
+  justify-content: flex-start;
+}
+.v12-justify-end{
+  display: flex;
+  justify-content: flex-end;
 }
 .v12-d-grid-columns-2 {
   display: grid;