how to add bootstrap in angular

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

 "styles": [
              "./node_modules/bootstrap/dist/css/bootstrap.css",
              "src/styles.css"              
            ],

npm install --save bootstrap

 $ npm install --save bootstrap

....      "styles": [        "node_modules/bootstrap/dist/css/bootstrap.min.css",        "src/styles.css"      ],      "scripts": [          "node_modules/jquery/dist/jquery.min.js",          "node_modules/bootstrap/dist/js/bootstrap.min.js"      ].....

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

npm install bootstrap