body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;

  /* IMAGE DE FOND */
  background-image: url('images/fond.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* titre */
h1 {
  text-align: center;
  color: white;
}

/* conteneur principal */
.container {
  display: flex;
  gap: 20px;
}

/* sections */
section {
  flex: 1;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(5px);

  padding: 20px;
  border-radius: 15px;
  border: 1px solid rgba(255,255,255,0.2);

  color: white;
}

/* boutons onglets */
.tab-button {
  padding: 15px 50px; /*hauteur+largeur*/
  font-size: 15px; /*taille du texte*/
  cursor: pointer;    
  border: none;
  background: darkgray;
  margin-right: 5px;
  border_radius: 10px;
  color: skyblue;
}
.tabs {
	display:flex;
	gap: 30px;
	flex_wrap: wrap;
}


.tab-button.active {
  background: darkgray;
  color: skyblue;
}

.tab-button:hover{
	background: #000;
}

/* contenu des onglets */
.tab-content {
  display: none;
  padding: 15px;
  margin-top: 10px;

  background: rgba(0,0,0,0.25);
  border-radius: 10px;

  color: white;
}

.tab-content.active {
  display: block;
}

/* images */
.image-container {
  width: 100%;
  max-width: 900px;
  margin: auto;
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
}
.video-responsive {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
}
.conteneur-grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  padding: 10px;
}
.petite-img {
  max-width: 200px;
}

h2 {
  text-decoration: underline;
  color: skyblue;
}

h3 {
  text-decoration: underline;
  color: skyblue;
}