.boton_nav {
  color: white;
  text-decoration: none;
  font-size: 22px;
  border: none;
  background: none;
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
}

.boton_nav::before {
  margin-left: auto;
}

.boton_nav::after, .boton_nav::before {
  content: '';
  width: 0%;
  height: 2px;
  background: #ffcf2d;
  display: block;
  transition: 0.5s;
}

.boton_nav:hover::after, .boton_nav:hover::before {
  width: 100%;
}