bienvenida.css

.remark-slide-content {
  background-image: url("css/cdsb.png"), linear-gradient(to bottom, white 88%, rgba(227, 227, 227) 96%) ;
  background-position: 10px 565px , center;
  background-size: 95px , 100% 100%, cover ;
  font-size: 20pt;
}

.remark-slide-content h1, .remark-slide-content h2, .remark-slide-content h3 {
  color: #454647;
  font-weight: bold;
}

.title-slide {
  background-image: url("css/encuentro.png"),url("css/rmb.png"), url("css/avatar.png"),url("css/nnb.png"), linear-gradient(to bottom, white 88%, rgba(227, 227, 227) 96%)  ;
  background-position: 0% 0%,20% 92%,50% 95%,80% 92%, center ;
  background-size: 1250px,210px,120px,190px, 100% 100%, cover ;
}

.title-slide h1 {
  text-align: center;
  position: absolute;
  bottom: 30%;
  left: 6%;
  color: #454647;
  font-weight: bold;
}

.title-slide h2 {
  font-size: 30pt;
  position: relative;
  text-align: center;
}

.title-slide h3 {
  text-align: center;
  position: absolute;
  bottom: 20%;
  left: 36%;
  color: #454647;
  font-weight: bold;
}

.chapter-slide {
  background-image: url("https://www.r-project.org/conferences/useR.png"), linear-gradient(to bottom, #B85232 85%, rgba(184, 82, 50) 95%) ;
  background-position: 10px 590px , center;
  background-size: 0px, 100% 100%, cover ;
}

.chapter-slide h1 {
  position: absolute;
  top: 40%;
  left: 15%;
  text-align: center;
  color: #e8e8e8 ;
}



/* Two-column layout */
.left-column {
  width: 20%;
  float: left;
  margin-top: -30px;
}

.right-column {
  width: 75%;
  float: right;
  margin-top: -30px;
}

.pull-left {
  float: left;
  width: 47%;
  margin-top: -30px;
}
.pull-right {
  float: right;
  width: 47%;
  margin-top: -30px;
}