igniteui-angular-sovn/src/lib/expansion-panel/expansion-panel-header.component.html

Ignite UI for Angular is a dependency-free Angular toolkit for building modern web apps

<div class="igx-expansion-panel__header-inner" [attr.tabindex]="tabIndex" role="button" [attr.id]="id"
[attr.aria-disabled]="disabled" [attr.aria-expanded]="isExpanded" [attr.aria-controls]="controls">
    <div class="igx-expansion-panel__title-wrapper">
        <ng-content select="igx-expansion-panel-title"></ng-content>
        <ng-content select="igx-expansion-panel-description"></ng-content>
    </div>
    <ng-content></ng-content>
    <div [class]="iconPositionClass">
        <ng-content *ngIf="iconTemplate" select="igx-expansion-panel-icon"></ng-content>
        <igx-icon *ngIf="!iconTemplate">
            {{panel.collapsed? 'expand_more':'expand_less'}}
        </igx-icon>
    </div>
</div>