style.css

body {
  background: rgb(38, 41, 34);
}

.reveal {
  font-family: "Open Sans", sans-serif;
  font-size: 36px;
  font-weight: normal;
  color: #FFF;
}

.reveal h1 {
  text-transform: none;
}

.reveal h2 {
  text-transform: none;
}

.reveal h3 {
  text-transform: none;
}

.box-grass {
  position: fixed;
  bottom: 0px;
  height: 60vh;
  width: 100vw;
  z-index: +10;
}

.reveal section img {
  background: unset;
}

.reveal table th, .reveal table td {
  border-bottom: unset;
}

.reveal pre {
  box-shadow: unset;
}

.reveal a:hover img {
  background: unset;
  border-color: unset;
  box-shadow: unset;
}