[update] Angular integration guide

docs/guides/integration_with_angular.md

@@ -24,6 +24,10 @@ Create a new **my-angular-todo-app** project using Angular CLI. For this purpose
 ng new my-angular-todo-app
 ~~~
 
+:::note
+If you want to follow this guide, disable Server-Side Rendering (SSR) and Static Site Generation (SSG/Prerendering) when creating new Angular app!
+:::
+
 The command above installs all the necessary tools, so you don't need to run any additional commands.
 
 ### Installation of dependencies
@@ -118,6 +122,31 @@ export class ToDoComponent implements OnInit, OnDestroy {
 }
 ~~~
 
+#### Adding styles
+
+To display To Do List correctly, you need to provide the corresponding styles. For this purpose, you can create the **todo.component.css** file in the **src/app/todo/** directory and specify important styles for To Do List and its container:
+
+~~~css title="todo.component.css"
+/* import To Do List styles */
+@import "@dhx/trial-todolist/dist/todo.css";
+
+/* specify styles for initial page */
+html,
+body {
+    margin: 0;
+    padding: 0;
+    height: 100%;
+    background-color: #f7f7f7;
+}
+
+/* specify styles for the To Do List container */
+.component_container {
+    height: 100%; 
+    max-width: 800px; 
+    margin: 0 auto;
+}
+~~~
+
 #### Loading data
 
 To add data into To Do List, you need to provide a data set. You can create the **data.ts** file in the **src/app/todo/** directory and add some data into it: