.reveal .logo {
  position: fixed;
  display: block;
  left: 8px;
  bottom: 8px;
  z-index: 31;
  width: 150px;
  height: 150px;
  background-image: url('../img/avatar.png');
  background-size: 80px;
  background-position: 0% 100%;
  background-repeat: no-repeat;
}

.reveal .date {
  position: fixed;
  display: block;
  left: 8px;
  bottom: 0px;
  z-index: 33;
  width: 80px;
  height: 150px;
  text-align: center;
  font-size: 0.8em
}

.reveal h3 {
  text-align: left;
}

.reveal .menubar {
  height: 1%;
  width: 100 %;
  margin: 0;
  background: url('../img/barre.png') no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}