body{
    margin-left: 75px;
}

@media (max-width: 768px) {
    body {
        margin-left: 0;
        margin-top: 60px;
    }
  }

.identité{
    margin-top: 20px;
    height: 200px;
    line-height: 30px;
    text-align: center;
    height: 100%;

}

.ml{
    border: 3px solid black;
    padding: 20px;
    margin-left: 30%;
    margin-right: 30%;
}