body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #0077b6;
    color: white;
    text-align: center;
    padding: 30px 10px;
    display:grid;
    grid-template-columns: 20% 80%;
    grid-template-rows:auto;
    
}


header img{
    width:200px;
}

header div#texte
{
    display:grid;
    grid-template-columns:auto;
    grid-template-rows:60% 40%;
}


header div#texte h1,header div#texte p
{
    display:grid;
    justify-content:center;
    align-items:center;
}
nav {
    background-color: #023e8a;
    text-align: center;
    padding: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

section {
    background-color: white;
    margin: 20px;
    padding: 20px;
    border-radius: 5px;
}

h2 {
    color: #0077b6;
}

ul {
    list-style-type: square;
    padding-left: 20px;
}

footer {
    background-color: #023e8a;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}