pres.css

slides > slide.title-slide   {
	background-image: url("cover.png");    
	background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
	background-size: cover;
	-webkit-background-size: contain;
	-moz-background-size: contain;
}

slides > slide:not(.nobackground):before {
    -webkit-background-size: 113px 30px;
    -moz-background-size: 113px 30px;
    -o-background-size: 113px 30px;
    background-size: 113px 30px;
    padding-left: 40px;
    height: 30px;
	width: 115px;
    line-height: 1.9;
}

.title-slide hgroup {
  top: 150px;
  left: 50px;  
}

slides > slide.title-slide hgroup h1 {
  color: #7090A5;
  /*grayblue*/
}

slides > hgroup h2 code {
	color: white;
}

slides h1 {
	font-family: "Open Sans", Arial, 'Microsoft YaHei UI';
	font-size: 2.5em;
    color: #7090A5;  /*graylbue*/
	margin-bottom: .6em;
}

slides h2 {
	font-family: "Open Sans", Arial, 'Microsoft YaHei UI';
	font-size: 2em;
	color: #7090A5; /*grayblue*/
	margin-bottom: .6em;
}

slides h3 {
	font-family: 'Calibri Light', Arial, 'Microsoft YaHei UI';
	font-size: 1.5em;
	color: #00BCE4; 	/*blue*/
	margin-bottom: .6em;
}

slides h4 {
	font-family: 'Cambria', Arial, 'Microsoft YaHei UI';
	font-size: 1.25em;
	color: #F47721; 
	/*#orange*/
	margin-bottom: .6em;  
}

slides h5 {
	font-family: 'Segoe UI Light', Arial, 'Microsoft YaHei UI';
	font-size: 1.1em;
	color: #00A78E; 
	/*teal*/
	margin-bottom: .6em;  
}

slides h6 {
	font-family: "Open Sans", Arial, 'Microsoft YaHei UI';
	font-size: 1.05em;
	color: black;
    margin-bottom: .6em;    
}

slides p, slides a, slides ul, slides ol {
	font-family: "Open Sans", Arial, "Microsoft YaHei";
}

slides strong {
	font-weight: bold;
}

slides em {
	font-style: italic;
}

.footer {
    color: black; 
	background-color: #E8E8E8;
	position: absolute;
	bottom: 5%;
	width: 100%;
    text-align: center; 
    font-family: Arial, Arial, 'Microsoft YaHei UI';
	font-size: 0.85em;
}

del {
   text-decoration: line-through;
   color: #AAB1BA;
}

slides table.rmdtable {
	font-family: "Open Sans", Arial, "Microsoft YaHei";
}

slides table.rmdtable th {
  color: white;
  font-size: 18px;
  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(40%, #7D3F98), color-stop(80%, #7030A0)) no-repeat;
  background: -webkit-linear-gradient(top, #7D3F98 40%, #7030A0 80%) no-repeat;
  background: -moz-linear-gradient(top, #7D3F98d 40%, #7030A0 80%) no-repeat;
  background: -o-linear-gradient(top, #7D3F98 40%, #7030A0 80%) no-repeat;
  background: linear-gradient(top, #7D3F98 40%, #7030A0 80%) no-repeat;
  background: #7090A5; /*grayblue*/
}

slides table.rmdtable th code {
	color: white;
}

slides .prettyprint {
	margin-left: 0;
	left: 0;
	padding-left: 10px;
}

slides .forceBreak {
	-webkit-column-break-before: always;
	-webkit-column-break-after: always;
	-moz-column-break-before: always;
	-moz-column-break-after: always;
	-ms-column-break-before: always;
	-ms-column-break-after: always;
	-o-column-break-before: always;
	-o-column-break-after: always;
	break-before: column;
}

slides .col-2L {
	display: block;
	float: left;
	width: 48%;
	text-align: left;
}

slides .col-2R {
	display: block;
	float: right;
	width: 48%;
	text-align: left;
}

slides .col-3L {
	float: left;
	width: 32%;
	text-align: left;
}

slides .col-3C {
	display: inline-block;
	width: 32%;
	text-align: left;
}

slides .col-3R {
	float: right;
	width: 32%;
	text-align: left;
}

slides blockquote {
  font-family: Georgia, KaiTi, 楷体; 
  display: block;
  position: relative;
  background: #f9f9f9;
  border-left: 10px solid #ccc;
  margin: 1em 10px;
  padding: 0.5em 10px;
  quotes: "\201C""\201D""\2018""\2019";
  box-shadow:none;
}

slides blockquote:before {
  color: #ccc;
  content: open-quote;
  font-size: 4em;
  line-height: 0.2em;
  position: absolute;
  margin-right: 0.25em;
  vertical-align: 0.4em;
}

slides blockquote:after {
  color: #ccc;
  display: inline;
  line-height: 0.1em;
  content: close-quote;
  font-size: 2em;
  line-height: 0.1em;
  position: absolute;
  right: 3px;
  vertical-align: 0em;
  bottom: 0;
}

slides blockquote p {
  display: block;
}

.gdbar img {
  width: 160px !important;
  height: 40px !important;
  margin: 8px 8px;
}

.gdbar {
  width: 200px !important;
  height: 60px !important;
  top: 60px !important;
}

.orange {
   color: #F47721; 
}

.cranberry {
   color: #D20962;
}

.blue {
   color: #00BCE4;
}

.green {
   color: #7AC143;
}

.teal {
   color: #00A78E;
}

.violet {
   color: #7D3F98;
}

.lime {
   color: #B8D936;
}

.gold {
   color: #FDB933;
}

.pink {
   color: #F58F9F;
}

.pistachio {
   color: #60C3AE;
}

.periwinkle {
   color: #5F78BB;
}

.sand {
   color: #CEA979;
}

.red {
   color: #EF4135;
}

.darkgreen {
   color: #5E9732;
}

.darkpink {
   color: #EE3D94;
}

.grayblue {
   color: #7090A5;
}

ora {
   color: #F47721; 
}

crb {
   color: #D20962;
}

blu {
   color: #00BCE4;
}

gre {
   color: #7AC143;
}

tea {
   color: #00A78E;
}

vio {
   color: #7D3F98;
}

lim {
   color: #B8D936;
}

gld {
   color: #FDB933;
}

pnk {
   color: #F58F9F;
}

pst {
   color: #60C3AE;
}

prw {
   color: #5F78BB;
}

snd {
   color: #CEA979;
}

red {
   color: #EF4135;
}

dgr {
   color: #5E9732;
}

dpk {
   color: #EE3D94;
}

gbl {
   color: #7090A5;
}