.btn
{
    height: 100px;
    width: 100px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 9999;
}

.icone
{
    width: 50px;
    cursor: pointer;
}

body {
    margin: 0;
    padding: 0;
    font: 20px Arial;
    text-align: center;
    background-color: rgb(41, 41, 41);
}

body#accueil {
    background-color: transparent;
  }

/* Conteneur du menu */
.menuderoulant {
    list-style: none;
    padding: 0;
    margin: 20px auto;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1000;
    font-size: 20px;
}

/* Élément du menu principal */
.menuderoulant li {
    position: relative;
}

/* Liens du menu principal (élargi) */
.menuderoulant li a {
    display: block;
    color: #ffffff;
    background: transparent; 
    padding: 12px 20px;
    min-width: 200px;
    text-align: center;
    text-decoration: none;
}

/* Effet au survol */
.menuderoulant li a:hover {
    background-color: #666666;
}

/* Sous-menus (ajustés à la largeur des boutons) */
.menuderoulant .sousmenu {
    list-style-type: none;
    display: none;
    padding: 0;
    margin: 0;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%); 
    background-color: transparent;
    min-width: 200px; 
    text-align: center;
    z-index: 1100;
}

/* Éléments du sous-menu */
.menuderoulant .sousmenu li {
    border-top: 1px solid transparent;
}

/* Liens du sous-menu */
.menuderoulant .sousmenu li a {
    display: block;
    color: #ffffff;
    text-decoration: none;
    background-color: rgba(0, 0, 0, 0.350);
    padding: 10px 15px;
    min-width: 200px; 
}

/* Effet au survol du sous-menu */
.menuderoulant .sousmenu li a:hover {
    background-color: #666666;
}

/* Afficher le sous-menu au survol */
.menuderoulant li:hover .sousmenu {
    display: block;
}

.menu-style {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 5px 15x;
    border-radius: 8px;
    width: max-content;
    margin: 0 auto;
    z-index: 999;
}

.card-container {
    display: flex;
    justify-content: center; 
    gap: 20px;
    flex-wrap: wrap; 
    position: relative;
    z-index: 1;
    padding: 0 20px;
    box-sizing: border-box; 
}

.card {
    width: 100%;              
    max-width: 400px;       
    background-color: white;
    box-shadow: 0px 5px 20px #999;
    margin-top: 20px;
    flex: 1 1 300px; 
}
.card a {
    color: #333;
    text-decoration: none;
}

.card:hover .card-image img {
    width: 100%;
}

.card-image {
    height: 410px;
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 90%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: grayscale(0);
    transition: filter 0.3s ease, width 0.3s ease;
}

.card-body {
    text-align: center;
    padding: 15px 20px;
    box-sizing: border-box;
}

.card-date {
    font-family: 'Source Sans Pro', sans-serif;
}

.card-title, .card-excerpt {
    font-family: 'Playfair Display', serif;
}

.card-date, .card-title {
    text-align: center;
    text-transform: uppercase;
    font-weight: bold;
}

.card-excerpt {
    padding: 10px 20px;
    text-align: justify;
}

.background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.background-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.background-video::after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

h1 {
    text-align: center;
    color: rgb(255, 255, 255);
    font-size: 70px;
}

h2 {
    color: black
}

ul {
    list-style-type: "- ";
}

a {
    color: cyan;
}

a:hover {
    color: white;
}

a:visited {
    color: red;
}

.lien-fixe {
    text-align: left;
    color: white;
    margin: 20px;
}

.slogan {
    color: white;
    font-size: 36px;
    margin-top: 150px;
    animation: fadeInOut 25s ease-in forwards;
    text-shadow: 2px 2px 10px black;
    opacity: 0;
    font-style: italic;
}

@keyframes fadeInOut {
    0% { opacity: 0; }
    10% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}