button {
  margin: 0 3px 10px 0;
  padding-left: 2px;
  padding-right: 2px;
  width: 300px;
}

button:last-of-type {
  margin: 0;
}

p.borderBelow {
  margin: 0 0 20px 0;
  padding: 0 0 20px 0;
}

video {
  vertical-align: top;
  --width: 25vw;
  width: var(--width);
  height: calc(var(--width) * 0.5625);
}

video:last-of-type {
  margin: 0 0 20px 0;
}

video#gumVideo {
  margin: 0 20px 20px 0;
}

