/*Reset CSS*/
*{
  margin: 0px;
  padding: 0px;
  font-family: Avenir, sans-serif;
}

nav{
  position: sticky;
  width: 100%;
  margin: 0 auto;
  background-color:black;
  top: 0px;
}

nav ul{
  list-style-type: none;
}

nav ul li{
  float: left;
  width: 20%;
  text-align: center;
  position: relative;
}

nav ul::after{
  content: "";
  display: table;
  clear: both;
}

nav a{
  display: block;
  text-decoration: none;
  color:white;
  border-bottom: 2px solid transparent;
  padding: 10px 0px;
}

nav a:hover{
  color: orange;
  border-bottom: 2px solid gold;
}

.sous{
  display: none;
  box-shadow: 0px 1px 2px #CCC;
  background-color:black;
  position: absolute;
  width: 100%;
  z-index: 1000;
}
nav > ul li:hover .sous{
  display: block;
}
.sous li{
  float: none;
  width: 100%;
  text-align: left;
}
.sous a{
  padding: 10px;
  border-bottom: none;
}
.sous a:hover{
  border-bottom: none;
  background-color: RGBa(200,200,200,0.1);
}
.deroulant > a::after{
  content:" ▼";
  font-size: 12px;
}


/* Bloc */
.conteneur{
margin: 50px 20px;
height: 100%;
}


.bloc {
  position: relative;
  height:76vh;
  width:100%;
  overflow: hidden;
  }

.bloc video{
  position:absolute;
  min-width:100%; 
  min-height: 100%;
  top:50%;
  left:50%;
  z-index:-100;
  transform: translate(-50%,-50%);
  }

.text-over{
  position: relative;
  line-height: 2.1;
  text-align: center;
  color: #fff;
  top: 39%;
  }

.bloc::before{
  position:absolute;
  content: "";
  height: 100%;
  width: 100%;
  background-color: black;
  opacity: 30%;
  z-index: -99;
  }


  /* Bloc Notre travail*/



  /* Bloc Etudes et suivis */



  
  /* Bloc partenaires*/



/* Pied de page */

/* Réseaux sociaux */

h2{
text-align: center;
}

*.social-buttons{
  margin: 0;
  padding: 0;
  font-family: "montserrat",sans-serif;
}

.social-buttons{
  height: 20%;
  display: flex;
  align-items: center;
  justify-content: center;
}


.social-buttons a{
  display: inline-flex;
  text-decoration: none;
  font-size: 18px;
  width: 60px;
  height: 60px;
  color: #fff;
  justify-content: center;
  align-items: center;
  position: relative;
  margin: 0 8px;
}

.social-buttons a::before{
  content: "";
  position: absolute;
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg,#22a6b3,#30336b);
  border-radius: 50%;
  z-index: -1;
  transition: 0.3s ease-in;
}

.social-buttons a:hover::before{
  transform: scale(0);
}

.social-buttons a i{
  transition: 0.3s ease-in;
}

.social-buttons a:hover i{
  background: linear-gradient(45deg,#22a6b3,#30336b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transform: scale(2.2);
}

footer{
  background-color: #1a1a1a;
  padding: 25px 100px;
  color:#828282;
}
footer .colonnes{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
h2{
  align-items: center;
  position: relative;
}
h3{
  margin-bottom: 10px;
}
/* Fin du pied de page */


/* Pour écran*/