body {
  background: url('/assets/img/bg-pixel.jpg') repeat;
  font-family: Arial, sans-serif;
  color: yellow;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  background-color: #111;
  border-radius: 0;
  border: 2px solid orange;
  flex: 1;
}

.titulo-principal {
  text-align: center;
  font-size: 2.5em;
  color: yellow;
  margin: 10px 0;
}

.subtitulo {
  text-align: center;
  font-size: 1.4em;
  color: #88e;
  margin-bottom: 10px;
}

.bienvenida {
  text-align: center;
  font-size: 1.2em;
  color: lightgreen;
  margin-bottom: 20px;
}

.botones-navegacion {
  text-align: center;
  margin-bottom: 20px;
}

.botones-navegacion a {
  display: inline-block;
  margin: 5px;
  padding: 10px 20px;
  border: 2px solid orange;
  border-radius: 10px;
  background-color: #222;
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.botones-navegacion a:hover {
  background-color: #333;
  color: orange;
}

.seccion .cuadro {
  background-color: #222;
  border-radius: 10px;
  border: 1px solid #444;
  margin-bottom: 20px;
  padding: 15px;
}

footer {
  background-color: #111;
  color: orange;
  text-align: center;
  padding: 10px;
  border-top: 2px solid orange;
}