body{
background-color: black;
margin: 0;
padding: 0;
}
nav{
background-color:none;
margin:auto;
padding: 10px;
width:100%;
text-align: center;
background-image: url("https://www.pixelstalk.net/wp-content/uploads/2016/10/Image-of-Binary-Code-1.jpg");
}
.liens{
color: white;
padding: 10px;
font-size: 25px;

}

nav li{
list-style-type: none;
display: inline-block;
margin: 30px ;
}

h1{
color: black;
font-size: 40px;
text-align: center;
margin: auto;
}

header{
background-color: black;
height:375px;
width: 100%;
padding: 0;
margin:0px;
}

#conteneur{
display: flex;
flex-direction: row;
background-color: black;
}

.contenu{
width: 500px;
height: 300px;
background-color: white;
margin: 70px ;
font-size: 24px;
padding:10px;
text-align: center;
}

#contenug{
width: 800px;
}

#contenuc{
width: 800px;
height: 500px;
}
h2{
color: black;
margin: 25px;
font-size: 25px;
}


footer{
padding: 20px;
background-image: url("https://www.pixelstalk.net/wp-content/uploads/2016/10/Image-of-Binary-Code-1.jpg");
}

li:hover a{
color: grey;
transition: 0.3s all;

}

#conteneur2{
display: flex;
flex-direction: row;
background-color: black;
}

.contenu2{
width: 500px;
height: 300px;
background-color: white;
margin: 70px ;
font-size: 24px;
padding:10px;
text-align: center;

}


.Wikipédia{
color: #000000;

}

#contenuc2{
    width: 800px;
margin-top: 400px;
position: relative;
left: 500px;

}