The Bootstrap Grid System is built with Flexbox and allows you to create complex layouts using a series of containers, rows, and columns. It uses a 12-column system, making it incredibly easy to design responsive websites.
<div class="container">
<div class="row">
<div class="col-md-6">Column 1</div>
<div class="col-md-6">Column 2</div>
</div>
</nav>