Grid Styling - Overwrite style of ag-grid

Question

I have the following style:

.ag-theme-fresh .ag-row-selected {
    background-color: #bde2e5; 
}`

It comes from a css style file of a theme

Answer 1

You should use ViewEncapsulation

Just add to your component encapsulation: ViewEncapsulation.None:

import { Component, ViewEncapsulation } from "@angular/core";

@Component({
    selector: '....',
    templateUrl: '....',
    styles: [`
        .ag-theme-fresh .ag-row-selected {
            background-color: #1428df !important;
        }
    `],
    encapsulation: ViewEncapsulation.None
})