<style media="screen">
.cover-container {
  max-width: 42em;
  color: #fff;
  text-shadow: 0 .05rem .1rem rgba(0, 0, 0, .5);
  display: -ms-flexbox;
  display: flex;
  height: 30em;
  background-color: #333;
}


/*
 * Header
 */
.masthead {
  margin-bottom: 2rem;
}

.masthead-brand {
  margin-bottom: 0;
}

.nav-masthead .nav-link {
  padding: .25rem 0;
  font-weight: 700;
  color: rgba(255, 255, 255, .5);
  background-color: transparent;
  border-bottom: .25rem solid transparent;
}

.nav-masthead .nav-link:hover,
.nav-masthead .nav-link:focus {
  border-bottom-color: rgba(255, 255, 255, .25);
}

.nav-masthead .nav-link + .nav-link {
  margin-left: 1rem;
}

.nav-masthead .active {
  color: #fff;
  border-bottom-color: #fff;
}

@media (min-width: 48em) {
  .masthead-brand {
    float: left;
  }
  .nav-masthead {
    float: right;
  }
}


/*
 * Cover
 */
.cover {
  padding: 0 1.5rem;
}
.cover .btn-lg {
  padding: .75rem 1.25rem;
  font-weight: 700;
}


/*
 * Footer
 */
.mastfoot {
  color: rgba(255, 255, 255, .5);
}
</style>

<div class="cover-container d-flex p-3 mx-auto my-4 flex-column">
  <header class="masthead mb-auto">
    <div class="inner">
      <h3 class="masthead-brand">Selia / Irekua</h3>
    </div>
  </header>

  <main role="main" class="inner cover">
    <h1 class="cover-heading">En construcción</h1>
    <p class="lead">Esta página sigue en construcción. Vuelve pronto para ver avances y noticias</p>
  </main>

  <footer class="mastfoot mt-auto">
    <div class="inner">
      <p>Conabio 2019</p>
    </div>
  </footer>
</div>
