.jumbotron{
  heght:100%;
  width:100%;
}
.jumbotron .container {
  max-width: 100%;
}
.vertical-center {
  min-height: 100%;  /* Fallback for browsers do NOT support vh unit */
  min-height: 100vh; /* These two lines are counted as one :-)       */

  display: flex;
  align-items: center;
}