.flex-center {
  display: flex;
  justify-content: center;
}

.flex-center video {
  width: min(90%, 1000px);
  height: auto;
}

.responsive-img {
  width: min(100%, 1000px);
  height: auto;
}

/* === SVG diagram theme === */
svg > rect:first-child {
  fill: #061018;
}

svg text[fill="#666"],
svg text[fill="#999"] {
  fill: #aaa !important;
}

svg line[stroke="#ccc"] {
  stroke: #445566 !important;
}

svg {
  background-color: #061018;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}