body {
  background-color: black;
  color: brown; 
}

#menu-abrir {
  position: fixed;
  bottom: 4vh;
  left: 6vw;
  border-radius: 8px;
  background-color: #000000;
  height: 10vw;
  width: 10vw;
  padding-right: 0.6vw;
  font-size: 6vw;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

#menu-ventana-max {
  position: fixed;
  display: none;
  z-index: 998;
  left: 0vw;
  top: 0vh;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
  overflow-y: auto;
}

#menu-contenido {
  background: white;
  border-radius: 12px;
  width: 90vw;
  text-align: center;
  list-style-type: none;
  padding: 0;
}

#menu-contenido > li {
  background-color: #333;
  color: white;
  padding: 10px;
  cursor: pointer;
  border-bottom: 1px solid #444;
}

.menu-sub {
  list-style-type: none;
  padding: 0;
  display: none;
}

.menu-sub.visible {
  display: block;
}

.menu-sub li {
  padding: 8px 20px;
  background-color: #555;
}

.menu-sub li:hover {
  background-color: #666;
}