Bootstrap is a popular CSS framework which can be used within an Angular project. This guide will walk you through adding bootstrap to your Angular CLI project and configuring it to use bootstrap.

Create a new project and navigate into the project

ng new my-app
cd my-app

With the new project created and ready you will next need to install bootstrap to your project as a dependency. Using the --save option the dependency will be saved in package.json

# version 3.x
npm install bootstrap --save

# version 4.x
npm install bootstrap@next --save

Now that the project is set up it must be configured to include the bootstrap CSS.

• Open the file .angular-cli.json from the root of your project.

• Under the property apps the first item in that array is the default application.

• There is a property styles which allows external global styles to be applied to your application.

• Specify the path to bootstrap.min.css

  It should look like the following when you are done:

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

Note: When you make changes to .angular-cli.json you will need to re-start ng serve to pick up configuration changes.

Open app.component.html and add the following markup:

<button class="btn btn-primary">Test Button</button>

With the application configured, run ng serve to run your application in develop mode. In your browser navigate to the application localhost:4200. Verify the bootstrap styled button appears.

Create a new project and navigate into the project

ng new my-app --style=scss
cd my-app

# version 3.x
npm install bootstrap-sass --save

# version 4.x
npm install bootstrap@next --save

Create an empty file _variables.scss in src/.

If you are using bootstrap-sass, add the following to _variables.scss:

$icon-font-path: '../node_modules/bootstrap-sass/assets/fonts/bootstrap/';

In styles.scss add the following:

// version 3
@import 'variables';
@import '../node_modules/bootstrap-sass/assets/stylesheets/_bootstrap';

// version 4
@import 'variables';
@import '../node_modules/bootstrap/scss/bootstrap';

Open app.component.html and add the following markup:

<button class="btn btn-primary">Test Button</button>

With the application configured, run ng serve to run your application in develop mode. In your browser navigate to the application localhost:4200. Verify the bootstrap styled button appears. To ensure your variables are used open _variables.scss and add the following:

// version 3
$brand-primary: red;

// version 4
$primary: red;

Return the browser to see the font color changed.