I am trying to add Bootstrap to my Angular app. I am new to this and although following the required steps I am having problems getting the bootstrap installed.

1. I did all the necessary steps from installing Angular cli, ng new first-app and ng serve.
2. I opened the vs code terminal and tried installing bootstrap using 

npm install bootstrap --save
3. Then adding this in the style.css

@import "~bootstrap/dist/css/bootstrap.css"

But still when I click on the link hovering over the above piece of code it says unable to locate file and prompts for creating a file with this path.