@charset "utf-8";
/* CSS Document */
body {
    margin: 0;
    padding: 0;
}
header {
    background-color: aqua;
    text-align: center;
    position: fixed;
    /*sort du flux*/
    width: 100%;
    height: 70px;
}
article {
    width: 400px;
    margin: auto;
    text-align: justify;
    padding-top: 80px;

}