.vertical-center {
  min-height: 80%;  /* Fallback for browsers do NOT support vh unit */
  min-height: 80vh; /* These two lines are counted as one :-)       */

  display: flex;
  align-items: center;
}

.container-huge {
    font-size:5em;
}

pre {
    font-size:1.5em;
}

.navbar {
    margin-bottom: 0px;
}

.fill {
    width: 100%;
    min-height: 92%;
    position: absolute;
    border: 0px;
}