course.css

.reveal blockquote {
  box-shadow: none;
}

.reveal section img {
  border: none;
  box-shadow: none;
}

.reveal pre {
  box-shadow: none;
}

blockquote:before {
  content: '❝ ';
}

blockquote:after {
  content: ' ❞';
}

.dlist dt {
  text-decoration: underline;
}

.dlist dt::after {
  content: ' :';
}

.conum[data-value]{display:inline-block;color:#fff!important;background-color:rgba(0,0,0,.8);-webkit-border-radius:100px;border-radius:100px;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
.conum[data-value] *{color:#fff!important}
.conum[data-value]+b{display:none}
.conum[data-value]::after{content:attr(data-value)}
pre .conum[data-value]{position:relative;top:-.125em}
b.conum *{color:inherit!important}
.conum:not([data-value]):empty{display:none}

.hdlist>table,.colist>table{border:0;background:none}
.hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}
.literalblock+.colist,.listingblock+.colist{margin-top:-.5em}
.colist table td {border: none;font-size:.6em;text-align:left}
.colist td:not([class]):first-child{padding:.4em .75em 0;line-height:1;vertical-align:top}
.colist td:not([class]):first-child img{max-width:none}
.colist td:not([class]):last-child{padding:.25em 0}

.listingblock>.title{color:#7a2518;font-size:.75em;padding-left:.8em;text-align:left;text-decoration:underline}