[Angular] Style HTML elements in Angular using ngStyle

We will learn how to make use of the 

ngStyle

 directive to directly add multiple style attributes to a DOM element as a style property. We’ll also learn how we can make these styles more dynamic through user input.

import { Component } from '@angular/core';

@Component({
  selector: 'ngstyle-component',
  template: `
    <div [ngStyle]="borderStyle">
      Here are some inline styles!
    </div>

    <p>
      <input type="text" #boxWidth>
      <button (click)="updateStyle(boxWidth.value)">set</button>
    </p>
  `
})
export class NgStyleComponent {
  borderStyle = {
    border: '1px solid black',
    'border-radius': '3px',
    'width.px': 200,
    padding: '15px'
  };

  updateStyle(width) {
    this.borderStyle['width.px'] = width;
  }
}      

Notice that when we use ngStyle, we are able to add '.unit' to the style.

'width.px': 200,      

width: '200px'