message: fix: SubMenu css
diff: @@ -22,12 +22,8 @@ import { Nav, Navbar, MenuItem } from 'react-bootstrap';
  import Button, { OnClickHandler } from 'src/components/Button';
  const StyledHeader = styled.header`
  - margin-top: -20px;
  - display: flex;
  - justify-content: space-between;
  - & > * {
  - flex-grow: 1;
  - }
  + position: relative;
  + top: -20px;
  .navbar-header .navbar-brand {
  font-weight: ${({ theme }) => theme.typography.weights.bold};
  }
  