Vmeda.Online/src/core/components/iframe/core-iframe.html

<div [class.core-loading-container]="loading || !safeUrl" [ngStyle]="{'width': iframeWidth, 'height': iframeHeight}">
    <!-- Don't add the iframe until safeUrl is set, adding an iframe with null as src causes the iframe to load the whole app. -->
    <iframe #iframe *ngIf="safeUrl" [hidden]="loading" class="core-iframe"
        [ngStyle]="{'width': iframeWidth, 'height': iframeHeight}" [src]="safeUrl"
        [attr.allowfullscreen]="allowFullscreen ? 'allowfullscreen' : null">
    </iframe>

    <ion-button
        *ngIf="!loading && displayHelp"
        color="dark" expand="block" fill="clear"
        (click)="openIframeHelpModal()"
        aria-haspopup="dialog"
        class="core-button-as-link core-iframe-help"
    >
        {{ 'core.iframehelp' | translate }}
    </ion-button>

    <span class="core-loading-spinner">
        <ion-spinner *ngIf="loading"></ion-spinner>
    </span>
</div>