title: angledown icon in react-bootstrap-typeahead
body: <p>Using typeahead inside formik and
  having tough time to add the fa-angle-up and fa-angle-down icons for react-bootstrap-typeahead as below image</p>
  <p><a href="https://i.stack.imgur.com/gV4kx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gV4kx.png" alt="enter image description here" /></a></p>
  <p>instead i have problem like below(it should look like above image)</p>
  <p><a href="https://i.stack.imgur.com/1Vuw0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1Vuw0.png" alt="enter image description here" /></a></p>
  <p>code: <a href="https://codesandbox.io/s/formik-example-forked-8m6o6" rel="nofollow noreferrer">https://codesandbox.io/s/formik-example-forked-8m6o6</a></p>