footer .social-icons{
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
      background: #f1f1f1;
  }
  .footer .social-icons a{
    margin: 5px;
  }
  .footer .copyright{
    text-align: center;
      background: #ab4c22;
      color: #fff;
      padding: 10px;
      font-size: 12px;
  }


.abstract{
  text-align: justify;}