.center-vertical{
  display: flex;
  justify-content: center;
  align-items: center;
}
h1 { 		
    margin: auto;
    color : white;  
    text-align: center;
    text-shadow: 2px 2px 3px black; 
    padding: 8px;
}
h2 {
    background-color: rgba(100, 100, 255);
    border-radius: 40px;
    text-align: center;
    color: white;
    font-size: 20px;
    padding: 4px;
    margin-top: 16px;
    margin-bottom: 32px;
}
h3 {
    background-color: rgba(100, 100, 255);
    border-radius: 40px;
    text-align: center;
    color: white;
    font-size: 20px;
    margin-top: 20px;
    margin-bottom: 10px; 
}
h4 {
    margin-bottom: 10px; 
}
h5 {
    font-size: 16px;
    margin-top: 8px;
    
}
.titre_ressource {
    font-size: 20px;
    background-color:darkgrey;
    color: white;
}
p{
    text-align: justify;
}
.conteneur-ligne{
    display: flex;
    flex-direction: row;
}
.element{
   margin: 8px;
}
.marge-topbot{
    margin-top: 6px;
    margin-bottom: 18px;
}
.marge-top{
   margin-top: 24px;
}
.marge-bottom{
   margin-bottom: 20px;
}
.marge-gauche{
   margin-left: 16px;
}
.padding-gauche{
   padding-left: 16px;
}
footer{
    background-color:black;
    color: white;
    margin-top: 100px;
    margin-bottom: 40px;
    padding: 40px;
    text-align: center;
}
.bouton {
    font: bold 11px Arial;
    text-decoration: none;
    background-color: #EEEEEE;
    color: white;
    padding: 12px;
    border-radius: 10px;
}
.danger {
    background-color: red;
}
.attention {
    background-color: orange;
}
.succes {
    background-color: green;
}
.banniere{
   border: solid 2px white;
   background: rgba(0,0,0,0.911);
   position: fixed;
   bottom: 0;
   left: 0;
   width: 100%;
   color: white;
   display: flex;
   justify-content: space-around;
   padding: 30px;
   font-family: "Signika Negative", sans-serif;
}
.text-banniere p{
    font-size: large;
}
.button-banniere{
    padding-top: 15px;
}
.button-banniere a{
    border: solid 2px rgb(230,30,30);
    padding: 10px;
    background: rgb(216,30,30);
    border-radius: 7px;
    color: white;
    text-decoration: none;
}