title: How to make a border in only one corner/two sides while using border radius - React Native
body: <p>I'm trying to make a tab with a curved bottom left corner and a border on the left and bottom sides, but I can only get it to have the border on all sides or none. 
  I'll get it on all sides if I use anything like:</p>
  
  <pre><code>tab2:{
   top: 3*width/8,
   width: 3*width/16,
   backgroundColor: 'red',
   borderColor:'white',
   height: width/8,
   borderBottomLeftRadius: 100,
   borderWidth: 1,
   borderRightWidth: 0,
   borderTopWidth: 0,
   borderTopColor: 'transparent
   borderRightColor: 'transparent'}
  </code></pre>
  
  <p>And if I take out <code>borderWidth: 1,</code> I don't get a border at all.
  Any suggestions?</p>