* {
    margin: 0;
    padding: 0;
  }
  
  body {
    background: #bfbfbf url(media/background.jpg);
    background-repeat: repeat-x;
    font-family: Arial, sans-serif;
  }
  
  /* Liste */
  ul,
  ol {
    list-style: none;
  }
  
  /* header */
  header {
    padding: 30px 0;
  }
  
  header h1 {
    font-size: 40px;
    text-align: center;
    color: #fff;
    text-transform: uppercase;
    text-shadow: 2px 2px 2px #000;
    font-family: Limelight, cursive;
    /* font-family: "Lobster", cursive; */
  }
  
  /* main-menu */
  
  #main-menu ul {
    width: 980px;
    height: 50px;
    margin: 0 auto;
    padding-top: 148px;
  }
  
  #main-menu ul li {
    float: left;
    width: 140px;
    height: 500px;
    overflow: hidden;
    position: relative;
  }
  
  .bw {
    position: absolute;
    left:0;
    width: 140px;
    height: 500px;
    cursor: pointer;
    background: url(media/bw-image.jpg);
    background-repeat: no-repeat;
    opacity: 0.7;
  }
  
  .color {
    position: absolute;
    left: 140px;
    width: 140px;
    height: 500px;
    cursor: pointer;
    background: url(media/color-image.jpg);
    background-repeat: no-repeat;
  }
  
  /* partie */
  #part2 div {
    background-position: -140px;
  }
  
  #part3 div {
    background-position: -280px;
  }
  
  #part4 div {
    background-position: -420px;
  }
  
  #part5 div {
    background-position: -560px;
  }
  
  /* description */
  
  .description {
    position: absolute;
    left: 140px;
    width: 240px;
    height: 460px;
    padding: 20px;
    background: white;
  }
  
  .description h2 {
    padding-top: 20px;
    font-size: 30px;
    font-family: "Limelight", cursive;
    text-align: center;
    color: #333;
    text-transform: uppercase;
  }
  .description h3 {
    margin-top: 30px;
    font-size: 26px;
    font-family: "Lobster", cursive;
    padding: 10px;
    background: #d70000;
    color: white;
    text-align: center;
    text-shadow: 1px 1px 1px #000;
    border-radius: 5px;
  }
  .description p {
    padding-top: 35px;
    font-size: 22px;
    font-family: "Lobster", cursive;
    color: black;
    text-align: center;
  }
  /* buttons-menu*/
  #buttons-menu{
   float:left;
   width:100%;
   padding: 170px 0 50px 0;
  }
  
  #buttons-menu ul {
    float:left;
    position:relative;
    left: 50%;
    text-align:center;
  }
  
  .button{
    float: left;
    width: 150px;
    margin-left:30px;
    padding: 10px 0;
    position:relative;
    right: 50%;
    text-shadow: 1px 1px 1px #000;
    font-family: Lobster,sans-serif;
    color:white;
    border-radius: 5px;
    box-shadow: 4px 4px 4px rgba(0,0,0,0.75);
    background-color:rgb(71, 70, 70);
    border:2px solid #b70000;
    font-size:22px;
    cursor:pointer;
    opacity: 0.9;
  
  }
  .hovered{
    background:#d70000;
    border:2px solid #333;
    font-size: 24px;
  }