const Link = styled.a`
    display: flex;
    align-items: center;
    padding: 5px 10px;
    background: papayawhip;
    color: palevioletred;
`;

const Link2 = styled.a`
    display: flex;
    align-items: center;
    padding: 5px 10px;
    background: steelblue;
    color: white;

    ${Link}:hover & {
        background-color: greenyellow;
        color: black;
    }
`;

class Hello extends React.Component{
  render() {
    return(
      <div>
        <Link>Hello World</Link>
        <Link2>Hello Again</Link2>
      </div>
    )
  }
}