Styling in Angular can be challenging, especially for developers new to its component-based architecture. Unlike traditional CSS, Angular introduces:

• View Encapsulation
• Shadow DOM
• Dynamic Styling Techniques

These require a deeper understanding of how styles interact with components.

What This eBook Covers

This guide provides a clear, structured, and practical approach to Angular styling, helping developers to:

💎 Apply styles effectively
💎 Master view encapsulation techniques
💎 Efficiently override styles
💎 Integrate third-party design libraries
💎 Implement dynamic styling
💎 Utilize Angular Material theming
💎 Build responsive designs

What You’ll Gain

By the end of this eBook, you'll have a comprehensive understanding of Angular styling, enabling you to style components with confidence and efficiency

Table of Contents

Preface

Different Ways to Add Styles to Angular Components

• Adding Styles Directly in the Component Decorator
• Moving Styles to an External Stylesheet
  • Using Multiple Stylesheets
  • Using Global Styles
• Styling Through Template
• Adding Third-Party Stylesheets in Angular
  • Install Bootstrap
  • Install TailwindCSS
  • Install Angular Material

How Styles Work in Angular

Types of View Encapsulation

• Emulated View Encapsulation
• Shadow DOM View Encapsulation
• None View Encapsulation

Understanding :host and :host-context in Angular Styling

• What is :host?
• Conditional Styling Using :host(.class-name)
• What is :host-context?
• A Better Alternative: Use CSS Variables Instead of :host-context()

Dynamic Styles and Classes in Angular

• Dynamically Adding/Removing Styles
• Binding Multiple Styles
• Dynamically Adding/Removing Classes
• Binding Multiple CSS Classes
• Conditional CSS Class Binding
• Cleaning Up Dynamic Styles

Understanding ::ng-deep

Overriding Component Styles

• Option 1: Define Styles in styles.css (Global Styles)
• Option 2: Use ViewEncapsulation.None
• Option 3: Using ::ng-deep
• Example: Using @Input() Instead of ::ng-deep
• Example: Using CSS Custom Properties Instead of ::ng-deep
• When ::ng-deep is Needed

Overriding Third-Party Library Components

Angular Styling with Shadow DOM

• Problems with Shadow DOM
  • Harder to Style
  • Issues with Slotted Content

Understanding Angular Material Theming

• Example: Changing Button Colors Using Theming API
• Using @use Instead of @import
• Understanding @forward Rule

Responsive Design in Angular

• CSS Flexbox → One-dimensional layout (row or column-based)
• CSS Grid → Two-dimensional layout (row and column-based)

Using Renderer2

• Changing Styles
• Creating and Appending an Element
• Adding and Removing Classes
• Adding and Removing Attributes
• Listening to Events
• Removing a Child Element