.reveal blockquote {
  background: none;
  box-shadow: none;
}

.reveal blockquote::before {
  display: inline-block;
  margin-bottom: -0.5em;
  content: ' ';
  background: url('quote.svg') no-repeat;
  background-size: 2em;
  height: 2em;
  width: 2em;
}

.reveal blockquote small {
  margin-top: 1em;
  display: block;
}

.reveal blockquote small::before {
  content: '– ';
}