.presentation {
  background: #778;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#01386b));
  background-image: -webkit-linear-gradient(top, #fff, #01386b);
  background-image:    -moz-linear-gradient(top, #fff, #01386b);
  background-image:      -o-linear-gradient(top, #fff, #01386b);
  background-image:         linear-gradient(top, #fff, #01386b);
}
.slide {
  background-color: #fff;
  border-radius: 10px;
  border: 2px solid #aaa;
  -webkit-transition: margin 0.25s ease-in-out;
  -moz-transition: margin 0.25s ease-in-out;
  -o-transition: margin 0.25s ease-in-out;
  transition: margin 0.25s ease-in-out;
}
header {
  color: #0055ab;
}
pre {
  font-family: 'Inconsolata', Courier;
  border-radius: 10px;
  background: rgba(255, 150, 60, 0.08);
  border: 2px solid rgba(255, 200, 0, 0.3);
}
.sidebar {
  background-color: #F8F8F8;
  border-right: 5px solid #AAA;
}