* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: Arial, sans-serif;
      display: flex;
      min-height: 100vh;
      background-color: #222; /*#f9f9f9;*/
      color: #333;
    }
    titre {
      background-color: #222;
      color: #FFDDA9;
      padding: 40px;
      position: fixed;
      top: 0;
      height: 150px;
      left: 0;
      right: 0;
      font-size: 50px;
      text-align: center;
      text-shadow: 0px 0px 20px #F3A000;
      
    	
    }
    
    ul {
      padding: 0.5em;
      margin-left:2em;
      list-style: square;
    }

    nav {
      width: 220px;
      background-color: #222;
      color: white;
      padding: 20px;
      position: fixed;
      top: 99px;
      bottom: 0;
      left: 0;
    }

    nav h1 {
      font-size: 1.4em;
      margin-bottom: 1em;
    }

    nav ul {
      list-style: none;
      color: white;
    }

    nav ul li {
      margin: 1em 0;
    }

    nav ul li a {
      color: white;
      text-decoration: none;
      transition: color 0.3s;
    }

    nav ul li a:hover {
      color: #1abc9c;
    }
   
    main {
	  background-color: #fdf8e4; /* jauni léger, effet papier */
      background-image:
      linear-gradient(to right, rgba(150, 150, 150, 0.1) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(150, 150, 150, 0.1) 1px, transparent 1px);
      background-size: 30px 30px; /* espacement des carreaux */
      background-repeat: repeat;
      padding: 40px;
      margin-left: 240px;
      max-width: 800px;
	  /*line-height:2em;*/
	  margin-left: 220px;
	  margin-top: 150px;
	  padding: 40px;
	  padding-bottom: 250px
	  background: #fff;
	  max-width: 900px;
	  box-shadow: inset -8px 0px 10px -8px rgba(0,0,0,0.2);
	  position: relative;
	}
	
	main::before {
	  content: "";
	  position: absolute;
	  top: 0;
	  left: 0;
	  width: 24px;
	  height: 100%;
	  background: radial-gradient(
	    circle at 5px 20px,
	    rgba(0, 0, 0, 0.1) 0%,
	    rgba(0, 0, 0, 0.05) 30%,
	    transparent 80%
	  );
	  filter: blur(3px); /* <<< effet de flou réel */
	  z-index: 1;
	  pointer-events: none;
	}
	tbody {
	  background-color:white;
	}
	table {
	  border: 2px solid #321; /* Bordure de 2px, solide, de couleur gris foncé */
	  border-collapse: collapse; 
	}
	td, th {
	  border-right: 1px solid #321; /* Bordure de 1px, solide, de couleur gris clair pour chaque cellule */
	  border-top: 0 solid #O;
	  padding: 5px;
      text-align: left; 
	  /*border-collapse: collapse;*/
	}
	td:last-child, th:last-child {
	    border-right: none; 
	}
	.row1 {
	  background-color:#ddd8c4;
	}
	.impaire {
	  background-color: #fdf8e4;
	}
    header {
      margin-bottom: 2em;
    }

    h1 {
      border-bottom: 2px solid #ddd;
      padding-bottom: 0.5em;
      margin-top: 0.5em;
      margin-bottom: 1.5em;
    }

    h2 {
      border-bottom: 2px solid #ddd;
      padding-bottom: 0.5em;
      margin-top: 2em;
      margin-bottom: 1em;
    }

	footer {
	  position: fixed;
	  bottom: 0;
	  left: 250px; /* pour tenir compte du menu */
	  /*right: 0;*/
	  width: 835px;
	  height: 60px;
	  background-color: white;
	  color: #777;
	  font-size: 0.9em;
	  padding: 1em;
	  z-index: 100;
	  box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
	}
	    
    .flip-horizontal {
  	  display: inline-block;
  	  transform: scaleX(-1);
	}
	.note {
	  padding: 5px;
	  background-color:#DFDFDF;
	  font-family: Arial, sans-serif;
	  font-size:80%;
	  font-style:italic;
	  border:solid;
	  
	
	}

	.lexique {
	  padding: 10px;
	  border-bottom: 2px solid #ddd;
	}
	
	.lexique b {
	  color: navy;	
	}
	details summary {
	  cursor: pointer;
	  list-style: none;
	  transition: color 0.3s ease;
	}
	
	details summary:hover {
	  color: #F3A000;
	}
	
	details[open] summary {
	  color: #FFDDA9; 
	  font-weight: bold;
	}
	
	
	details ul {
	  padding-left: 1em;
	  margin-top: 0.5em;
	  background-color:#333;
	}
	
	details[open] summary {
	  font-weight: bold;
	  background-color:#333;
	}

	.illu {
	  width:100%;
	  padding:1em;  
	  marging:0 auto;
	  background-color:#ddd8c4;
	  text-align:center;
	}