body {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: #6FB776;
    font-family: Arial, sans-serif;
}

header {
    width: 100%;
    background-color: #15771F;
    color: #fff;
    padding: 10px 0;
    position: fixed; 
    top: 0;
    left: 0;
    z-index: 1000;
}

header nav a {
    margin-left: 10px;
}

.col .ligne,
.col .ligne2,
.col .ligne3,
.col .ligne4 {
    margin-bottom: 10px;
}

.col p,
.col span {
    display: inline-block;
    margin: 0;
}

div {
    border: 1px solid black;
    margin: 20px;
    background-color: #15771F;
}

.ligne1, .ligne2, .ligne3, .ligne4 {
    margin-left: 10px;
    background-color: #fff;
}

a{
    color: azure;
}

h1 {
    margin: 10px;
    text-align: center;
}

p {
    margin-left: 20px;
}

footer {
    width: 100%;
    color: #fff;
    padding: 10px 0;
    position: fixed; 
    bottom: 0;
    left: 0;
    text-align: center;
}