diff --git a/src/app/packages/instantiate-ns/InstantiateNsComponent.html b/src/app/packages/instantiate-ns/InstantiateNsComponent.html
index 2bbd837..428515e 100644
--- a/src/app/packages/instantiate-ns/InstantiateNsComponent.html
+++ b/src/app/packages/instantiate-ns/InstantiateNsComponent.html
@@ -23,7 +23,7 @@
         </button>
     </div>
     <div class="modal-body modal-body-custom-height instantiate-ns">
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-12 col-form-label mandatory-label"
                 [ngClass]="{'text-danger': instantiateForm.invalid === true && submitted === true}">{{'MANDATORYCHECK' | translate}}</label>
             <label class="col-sm-4 col-form-label"
@@ -35,7 +35,7 @@
                     [ngClass]="{ 'is-invalid': submitted && f.nsName.errors }" required>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-4 col-form-label"
                 for="nsDescription">{{'PAGE.INSTANCEINSTANTIATE.DESCRIPTION' | translate}}*</label>
             <div class="col-sm-8">
@@ -44,7 +44,7 @@
                     [ngClass]="{ 'is-invalid': submitted && f.nsDescription.errors }" required></textarea>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-4 col-form-label" for="nsdId">{{'PAGE.INSTANCEINSTANTIATE.NSID' | translate}}*</label>
             <div class="col-sm-8">
                 <ng-select [items]="nsdSelect" bindLabel="name" bindValue="_id"
@@ -54,7 +54,7 @@
                 </ng-select>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-4 col-form-label"
                 for="vimAccountId">{{'PAGE.INSTANCEINSTANTIATE.VIMACCOUNT' | translate}}*</label>
             <div class="col-sm-6">
@@ -82,7 +82,7 @@
                 </button>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-4 col-form-label"
                 for="ssh_keys">{{'PAGE.INSTANCEINSTANTIATE.SSHKEY' | translate}}</label>
             <div class="col-sm-8">
@@ -90,24 +90,20 @@
                     formControlName="ssh_keys" id="ssh_keys"></textarea>
                 <div class="fileupload-text mt-1 mb-1">{{'FILEUPLOADLABEL' | translate}}</div>
                 <div class="custom-file">
-                    <input type="file" #fileInputSSH class="custom-file-input" (change)="sshFile($event.target.files)"
+                    <input type="file" #fileInputSSH class="fileupload custom-file-input" (change)="sshFile($event.target.files)"
                         id="customSSHFile">
-                    <label class="custom-file-label" #fileInputSSHLabel
-                        for="customSSHFile">{{'CHOOSEFILE' | translate}}</label>
                 </div>
             </div>
         </div>
-        <div class="form-group row">
+        <div class="form-group row mb-3">
             <label class="col-sm-4 col-form-label" for="config">{{'CONFIG' | translate}}</label>
             <div class="col-sm-8">
                 <textarea class="form-control" placeholder="{{'YAMLCONFIG' | translate}}" formControlName="config"
                     id="config"></textarea>
                 <div class="fileupload-text mt-1 mb-1">{{'FILEUPLOADLABEL' | translate}}</div>
                 <div class="custom-file">
-                    <input type="file" #fileInputConfig class="custom-file-input"
+                    <input type="file" #fileInputConfig class="fileupload custom-file-input"
                         (change)="configFile($event.target.files)" id="customConfigFile">
-                    <label class="custom-file-label" #fileInputConfigLabel
-                        for="customConfigFile">{{'CHOOSEFILE' | translate}}</label>
                 </div>
             </div>
         </div>
diff --git a/src/app/packages/instantiate-ns/InstantiateNsComponent.ts b/src/app/packages/instantiate-ns/InstantiateNsComponent.ts
index e0798d1..9ba89da 100644
--- a/src/app/packages/instantiate-ns/InstantiateNsComponent.ts
+++ b/src/app/packages/instantiate-ns/InstantiateNsComponent.ts
@@ -18,7 +18,6 @@
 /**
  * @file Instantiate NS Modal Component.
  */
-import { isNullOrUndefined } from 'util';
 import { Component, ElementRef, Injector, OnInit, ViewChild } from '@angular/core';
 import { FormBuilder, FormGroup, Validators } from '@angular/forms';
 import { Router } from '@angular/router';
@@ -31,7 +30,7 @@
 import * as jsyaml from 'js-yaml';
 import { NSCREATEPARAMS, NSData, NSDDetails } from 'NSDModel';
 import { RestService } from 'RestService';
-import { SharedService } from 'SharedService';
+import { SharedService, isNullOrUndefined } from 'SharedService';
 import { VimAccountDetails } from 'VimAccountModel';
 
 /**