       getComputedStyle(body).backgroundColor,
                'rgb(0, 255, 0)'
              );
              assert.equal(
                getComputedStyle(container).backgroundColor,
                'rgb(123, 123, 123)'
              );
              done();
            });
          }, 300);
        });
        test('DOM is scoped correctly when created dynamically inside a scoped container', (done) => {
          makeElement('x-dynamic', function () {
            let div = this.shadowRoot.querySelector