body {
  font-size: 18px;
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

pre {
  background-color:white;
  border:none;
}
.donate {
  margin-top: 2em;
}
.row-ad {
	margin-top: 1em;
	margin-bottom: 1em;
}
.video-toc {
  padding-top: 2em;
  padding-bottom: 2em;
}

@media only screen and (max-width: 768px) {
  body {
    font-size:1.4em;
  }
}