ng-multiselect-dropdown custom css

Question

I am using the ng-multiselect-dropdown. How can I override the CSS?

component.html

<ng-multiselect-dropdown [placeholder]="'Select Region'" 
    [data]="dropdownList" [(ngModel)]="selectedItems" 
    [settings]="dropdownSettings" (onSelect)="onItemSelect($event)" 
    (onSelectAll)="onSelectAll($event)" > 
</ng-multiselect-dropdown>

component.css

    .multiselect-dropdown[_ngcontent-c5] .dropdown-btn[_ngcontent-c5] {
        display: inline-block;
        border: 1px solid #adadad;
        width: 100%;
        padding: 6px 12px;
        margin-bottom: 0;
        font-size: 12px;
        font-weight: 400;
        line-height: 1.1;
        text-align: left;
        vertical-align: middle;
        cursor: pointer;
        background-image: none;
        border-radius: 4px;
   }

I need to override the default CSS with the above CSS code

Answer 1

Angular by default adds some _ngcontent-xx to your component CSS file so that it won't conflict with other components.

To solve your problem you need to add below CSS in your global style.css file or another way to make your component as encapsulation: ViewEncapsulation.None meaning its CSS won't append default classes of Angular.

Solution 1: Add in global stylesheet.

style.css

.multiselect-dropdown .dropdown-btn {
    display: inline-block;
    border: 1px solid #adadad;
    width: 100%;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 12px;
    font-weight: 400;
    line-height: 1.1;
    text-align: left;
    vertical-align: middle;
    cursor: pointer;
    background-image: none;
    border-radius: 4px;
}

Solution 2 Make component ViewEncapsulation.None

component.ts

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

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ],
  encapsulation: ViewEncapsulation.None // Add this line
})
export class AppComponent  {

}

Here is solution on stackblitz

Hope this will help!

Answer 2

You can try this way:

    :host ::ng-deep .multiselect-dropdown .dropdown-btn {
    display: inline-block;
    border: 1px solid #adadad;
    width: 100%;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 12px;
    font-weight: 400;
    line-height: 1.1;
    text-align: left;
    vertical-align: middle;
    cursor: pointer;
    background-image: none;
    border-radius: 4px;
}

you can override css of any node module or library by :host and ::ng-deep.