body {
  margin: 0;
  font-family: Arial, sans-serif;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #4b6ef5, #3ad6a7);
}
header {
  position: fixed;        /* Permet de coller le menu en haut */
  top: 0;
  width: 100%;
  z-index: 1000;          /* Le menu passe au-dessus du contenu */
}

.menu {
  background-color: #333;
}

.menu ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;           /* Menu horizontal */
  justify-content: center; /* Centre les éléments */
}

.menu li {
  margin: 0;
}

.menu a {
  display: block;
  padding: 15px 25px;
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.menu a:hover {
  background-color: #444;
}

/* Contenu (avec marge pour ne pas passer derrière le menu) */
.content {
  padding-top: 80px;      /* espace pour ne pas être caché par le menu */
  width: 90%;
  margin: auto;
}


h1 { 
  margin: 60px auto 40px auto; 
  color: white;
  margin-bottom: 30px;
  text-align: center;

}

.container {
  margin-left: 20px;
  display: inline-block;
  text-align: left;
  background: white;
  padding: 20px 40px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.container div {
  margin-left: 20px;
  font-size: 1.2em;
  margin: 10px 0;
}

.parametres {
  margin-top: 30px;
  background: white;
  padding: 15px 25px;
  border-radius: 10px;
  width: 320px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

.parametres input {
  width: 60px;
  margin: 5px;
  padding: 3px;
}

.parametres button {
  background: #0078d7;
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: 5px;
  cursor: pointer;
}

.parametres button:hover {
  background: #005fa3;
}

.bloc-centre {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}