.navbar-center {
    border: 12px solid #fff;
    padding: 15px 20px 5px !important;
    box-shadow: 1px -18px 17px -13px #0000004f;
    color: #fff;
    background: #2b7f6f;
    position: absolute;
    bottom: 8px;
    border-radius: 50px;
  }