Embedding a map in Cislunar is a piece of cake.
Class .cl-embed-map is used to create a container for map. You have to specify the height and width of this container explicitly, you may use one of the helper Classes
<div class="w-100 cl-embed-map cl-h-600px">
<!-- Embed Map here -->
<iframe src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d3478925.8743225075!2d-23.729883429440946!3d64.80139256540485!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x48d22b52a3eb6043%3A0x6f8a0434e5c1459a!2sIceland!5e0!3m2!1sen!2s!4v1578927827690!5m2!1sen!2s" width="600" height="450" frameborder="0" style="border:0;" allowfullscreen=""></iframe>
</div>