.bootstrap-column {
	text-align: center; 
	background-color: yellow;
}

.column-2 {
	background-color: aqua;
}

.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;
}