.center-block {
  display: block;
  margin: auto !important;
}

.center-text-content {
  text-align: center;
}

div.column:first-child {
  border-right: 1px solid lightgray;
}

.dark-background {
  background-color: #191919 !important;
}

.backgrounds .slide-background:last-child .slide-background:last-child .slide-background-content {
  background-color: #191919 !important;
}