body{
    height:100vh;background-image: url(fond.jpg);background-position: center;
    background-size: cover
    ;background-attachment: fixed;
    /*font-family:'Indie Flower',sans-serif;*/
}
a {color:rgb(62, 0, 125);}


@media only screen and (max-device-width: 736px) {
    body{height:auto!important}
    .navbar{position:relative;width:100%}
    .navbar a{display:block;width:100%!important}
    .row{height:auto!important}
    .col-md{height:auto!important}
    .card{width:100%;max-width:auto!important}
    .card-header{width:100%}
};