is is an info bar';
    infoBar.visible = true;
    this.addHTMLOutput(infoBar);

    assert.strictEqual(getComputedStyle(infoBar).display, 'flex');

    infoBar.visible = false;
    assert.strictEqual(getComputedStyle(infoBar).display, 'none');

    infoBar.visible = true;
    assert.strictEqual(getComputedStyle(infoBar).display, 'flex');
  });
});
</script>
