xxxxxxxxxx
<!-- the border-b-0 class will set border-bottom:0px -->
<div class="border-2 border-b-0">foo</div>
<!--
To reference a border side:
border (all sides)
border-t (border-top)
border-l (border-left)
border-r (border-right)
border-r (border-right)
You can set border width by tagging on a number (2,4,8):
border-t-2 (set's top border to 2px)
border-t-4 (set's top border to 4px)
border-8 (set's all borders to 8px)
-->
Here is tailwind playground where you can get feel for how borders work:
https://play.tailwindcss.com/ZlEDefMH42