fixes

src/global.scss

@@ -447,27 +447,35 @@ app-ordercancelled {
 
 .nav_back {
     background-color: #fff !important;
+    background-image: url("./assets/Group17_2.png");
     img {
         width: 25px;
+        display: none;
     }
 }
 
 .nav_back_white {
     background-color: transparent;
+    background-image: url("./assets/arrow_white.png");
     img {
         width: 25px !important;
+        display: none;
     }
 }
 
 .nav_menu {
+    background-image: url("./assets/Group22_2.png");
     img {
         width: 25px;
+        display: none;
     }
 }
 
 .nav_search {
+    background-image: url("./assets/search_2.png");
     img {
         width: 25px;
+        display: none;
     }
 }