title: How to change bootstrap4 navbar search box button margin padding?
body: <p>As you can see the attached image, bootstrap4 navbar search box and 'search button' does not have gap or margin in between when browser resized. I was reading solution on the documentation but could not figure out. How Can I create custom margin to create gap for search button?</p>
  <p><a href="https://i.stack.imgur.com/EfQfs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EfQfs.png" alt="enter image description here" /></a></p>