[Applied changes as per suggession]

Author: hitesh-wagento

app/design/frontend/Magento/blank/Magento_Wishlist/web/css/source/_module.less

@@ -53,17 +53,6 @@
         }
     }
 
-    .products-grid.wishlist {
-        .product-item {
-            margin-left: 2%;
-            padding: 5px;
-            width: calc(~'(100% - 4%) / 3');
-            &:nth-child(3n + 1) {
-                margin-left: 0;
-            }
-        }
-    }
-
     .account .table-wrapper .data.table.wishlist {
         .lib-table-bordered(
             @_table_type: horizontal
@@ -139,6 +128,13 @@
     .products-grid.wishlist {
         .product {
             &-item {
+                margin-left: 2%;
+                width: calc(~'(100% - 4%) / 3');
+
+                &:nth-child(3n + 1) {
+                    margin-left: 0;
+                }
+
                 &-photo {
                     display: block;
                     margin-bottom: @indent__s;
@@ -198,6 +194,7 @@
             border-bottom: 1px solid @secondary__color;
             margin: 0;
             width: 100%;
+
             &:first-child {
                 border-top: 1px solid @secondary__color;
             }

app/design/frontend/Magento/luma/Magento_Wishlist/web/css/source/_module.less

@@ -45,17 +45,6 @@
         }
     }
 
-    .products-grid.wishlist {
-        .product-item {
-            margin-left: 2%;
-            padding: 5px;
-            width: calc(~'(100% - 4%) / 3');
-            &:nth-child(3n + 1) {
-                margin-left: 0;
-            }
-        }
-    }
-
     .account .table-wrapper .data.table.wishlist {
         .lib-table-bordered(
         @_table_type: horizontal
@@ -146,6 +135,13 @@
     .products-grid.wishlist {
         .product {
             &-item {
+                margin-left: 2%;
+                width: calc(~'(100% - 4%) / 3');
+
+                &:nth-child(3n + 1) {
+                    margin-left: 0;
+                }
+
                 &-photo {
                     display: block;
                     margin-bottom: @indent__s;
@@ -229,6 +225,7 @@
             border-bottom: 1px solid @secondary__color;
             margin: 0;
             width: 100%;
+
             &:first-child {
                 border-top: 1px solid @secondary__color;
             }