update

assets/scss/cus-client/cus-client-common.scss

@@ -897,7 +897,9 @@ client-banner-box.client-banner-index {
     height: 730px;
     background-repeat: no-repeat;
     background-position: center;
-    background-size: cover;
+    background-size: contain;
+    max-width: 100%;
+    background-color: #fff;
 
     .banner-btn-groups {
       position: absolute;

assets/scss/cus-client/cus-client-page.scss

@@ -18,7 +18,7 @@
     .client-banner-box{
         .el-carousel__container{height: 730px;cursor: pointer;}
         .el-carousel__item{
-          .index-carousel-box{width:100%;height: 730px;display: block;background-position: center;background-repeat: no-repeat;background-color: #010619;}
+          .index-carousel-box{width:100%;height: 730px;display: block;background-position: center;background-repeat: no-repeat;background-color: #fff;}
         }
 
       .el-carousel__indicators {