.reveal p.source {
  font-size: 62px;
  font-family: "Source Code Pro", Menlo, Monaco, fixed-width;
}

.reveal p.source-code-pro {
  font-family: "Source Code Pro", Menlo, Monaco, fixed-width;
}

.hljs {
  background: black;
}

.reveal strong {
  color: #ffd310;
  font-style: normal
}

.reveal pre {
  box-shadow: none
}
.qrcode img {
    display: inline !important;
    height: 20%;
    width: 20%;
    margin-left: auto;
    margin-right: auto;
}

.reveal section.section_video_custom {
  margin-left: -100px
}

.reveal video {
	max-width: 120%;
	max-height: 120%;
}