.floating-card {
      position: fixed; /* makes it static on page */
      bottom: 20px;    /* distance from bottom */
      right: 20px;     /* distance from right */
      z-index: 1050;   /* keep it on top */
      max-width: 400px;
      box-shadow: 0 0.5rem 1rem rgba(0,0,0,.15);
    }