.boton-volver {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: radial-gradient(59.09% 59.09% at 50% 50%, #3794FE 0%, #00428D 100%);
    color: #fff;
    padding: 10px 20px;
    border: 1px solid black;
    border-radius: 50px;
    font-size: 14px;
    cursor: pointer;
  }
  
  .boton-volver:hover {
    background-color: #0056b3;
  }