title: Custom Tab Bar React Navigation 5
body: <p>I'm trying to make a tab bar like in the picture bellow, using React Navigation.</p>
  
  <p>I tried some codes, but nothing worked. Some codes are from previous React Navigation Version. The really problem is make the tab bar have a margin from from bottom and both sides, and borders rounded.</p>
  
  <p>Anyone can help me please?!</p>
  
  <p><a href="https://i.stack.imgur.com/dS3Ul.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dS3Ul.png" alt="enter image description here"></a></p>