body{
    background-image: url(cryptage.jpg);
    position: fixed;
    top: 0;
    left: 0;
    min-width: 100%;
    min-height: 100%;
}

h1{
    text-align: center;
    color:whitesmoke;
}

h4{
    text-align: center;
    color: whitesmoke;
}

a{
    color: whitesmoke;
}

a:link{
    color: lightgreen;
}

a:visited{
    color: rgb(0, 251, 255);
}

a:hover{
    color: rgb(34, 255, 0)
}