Answers for "bootstrap 4 border buttons"

button radius bootstrap 4

<span class="border"></span>
<span class="border-top"></span>
<span class="border-right"></span>
<span class="border-bottom"></span>
<span class="border-left"></span>

boostrap 4 button with no button and border

<Button type = "button" class = "btn btn-primary btn-lg"> Large button </ button>