调整布局

pages/product/exam.vue

@@ -446,10 +446,10 @@ export default {
 }
 
 .platform-products-services {
-  .img-card:nth-child(3) {
+  .img-card:nth-child(2) {
     background: #fafffc;
   }
-  .img-card:nth-child(5) {
+  .img-card:nth-child(4) {
     background: #fafffc;
   }
 }