Modals

The modal container (mc-modal) must always have a aria-labelledby attribute whose value corresponds to the value of the `id` attribute of the modal title.

On the opening the focus must be on the first focusable element inside the modal.

When modal is open, it should be closable using the `esc` key.

The modal title must always have an id attribute.

When modal is hidden, the mc-modal container must have a aria-hidden="true" attribute.

When modal is visible, the mc-modal container must have a aria-hidden="false" attribute.