#responsiveBtn {
    display: inline-block;
    width: 405px;
    background-color: #252525;
    color: white;
    text-decoration: none;
    text-align: center;
    padding: 5px 20px;
  }

  /* Mobile (phones) */
  @media (max-width: 480px) {
    #responsiveBtn {
      width: 182px;
    }
  }

  /* Tablet (portrait and smaller) */
  @media (max-width: 768px) and (min-width: 481px) {
    #responsiveBtn {
      width: 182px;
    }
  }