Black & White-Button within TextMedia
In order to create a button, you have to create a link first.
This is what a link looks like :-)
Click on the link, and now, under the "Styles" menu, you'll have the option to convert your link to a button.
This is what a black button looks like :-)
This is what a white button looks like :-)
Note: The design and style of all elements within a "Text & Media"-element may not look 100% on the actual website!