message: don't need to import CE package in file
diff: @@ -3,7 +3,6 @@ import styled, {keyframes} from 'styled-components'
  import {COMMON, TYPOGRAPHY, get} from './constants'
  import Button from './Button'
  import theme from './theme'
  -import '@github/details-menu-element'
  const SelectMenu = styled.details`
  &[open] > summary::before {
  