body {
  font-family: Roboto, sans-serif;
  font-size: 16px;
  padding: 2em;
}

model-viewer {
  width: 560px;
  height: 315px;
}

#brain {
  height: 600px;
  width: auto;
}
.content {
  width: 60%;
  margin: 0 auto;
}

.video {
  margin: 2em 0;
}
p {
  margin-bottom: 1em;
}

model-viewer {
  width: 560px;
  height: 315px;
}