.ronde{
border-radius:50%;
}
.en{
background-color: black;
margin-left:5%;
width: 180px;
height: 880px;
}
div{
display: block;
}
a{
margin-top:20%;
margin-left:5px;
display: flex;
padding: 15px;
text-decoration:none;
color: white;
font-size:20px;
font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}