body {
  margin: 0;
  font-family: "Roboto", arial, sans-serif;
  font-weight: 300;
}
.main-container {
  display: flex;
  flex-direction: row;
  height: 100%;
}
.left, .right {
  width: 50%;
	height: 100%;
	background-position: center top ;
	background-repeat: no-repeat;
	background-size: cover;
}
.left {
	background-image: url("../images/visuel-saison.jpg");
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
}
.right {
	background-image: url("../images/visuel-festival.jpg");
	display: flex;
  flex-direction: row;
  align-items: center;
}
.lecture, .festival {
  width: 70%;
  height: 0;
  padding-bottom: 70%;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  position: relative;
}
.lecture a, .festival a {
  height: 0;
  width: 80%;
  padding-bottom: 80%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  margin-top: 10%;
  text-decoration: none;
  color: #fff;
  position: relative;
}
.lecture a:hover .tooltip, .festival a:hover .tooltip {
  display: flex;
}

.lecture a:hover .arrow, .festival a:hover .arrow {
  display: block;
}

.lecture img, .festival img {
  width: 80%;
}
.lecture {
  border-right: 0.4em solid #fff;
  flex-direction: row-reverse;
}
.lecture a {
  background-color: #fff;
}
.lecture img {
  margin-top: 27%;
}
.festival {
  border-left: 0.4em solid #000;
  flex-direction: row;
}
.festival a {
  background-color: #000;
}
.festival img {
  margin-top: 22%;
}

.tooltip {
  background-color: #580c62;
  text-decoration: none;
  width: 60px;
  height: 60px;
  text-align: center;
  position: absolute;
  bottom: -90px;
  display: flex;
  align-items: center;
  box-shadow: 2px 2px 3px #000;
}
.arrow {
  position: absolute;
  display: block;
  height: 0;
  width : 0;
  border-right : 30px solid transparent;
  border-bottom: 30px solid #580c62;
  border-left : 30px solid transparent;
  top: -30px;
}
@media (min-width: 780px) { 
  .tooltip {
    display:none;
  }
  .arrow {
    display:none;
  }
}