Bootstrap class: row not working?

The about and portfolio buttons should be in the same row. Why isn’t it working?
Thanks <3

Have btn-group as a class in the row div.

Do you really want each button to have a col-md-6 to itself? What are you trying to do?

btn-group didn’t seem to work.
No, not actually col-md-6. Just sort of a placeholder.

It works for me if I remove the col thing:

<div class="row btn-group">
    <button class="NavButtons">BIOGRAPHY</button>
    <button class="NavButtons">PORTFOLIO</button>
</div>