.menu-nav{
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 250px;
  background-color: #e94057;
  padding: 1rem 2rem;
  transform: translateX(-400px);
  transition: transform .6s;
}

.menu-nav.visible{
  transform: translateX(0);
}

.menu-nav ul{
  list-style: none;
  padding-left: 0;
}

.menu-nav li{
  margin-bottom: 1rem;
}

.menu-nav a{
  color: white;
  font-weight: bold;
  text-decoration: none;
}

.mostrar-menu{
  background-color: #e94057;
  color: white;
  padding: .5rem 1rem;
  border: 0;
  border-radius: .3rem;
  cursor: pointer;
  font-size: 3rem;
    position: fixed;
    top: 8px;
    left: 16px;
}

.cerrar-menu{
  background-image:none;
  background-color: transparent;
  border: 0;
  padding: 0;
  color: white;
  font-size: 3rem;
  cursor: pointer;
  position: absolute;
  right: 1rem;
  top: 0;
}