/* Initialisation du style de la page */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Corps de la page */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

/* En-tête de page */
header {
    background-color: #2c3e50;
    color: #ecf0f1;
    text-align: center;
    padding: 1em;
    width: 100%;
}

/* Coeur de la page */
main {
    text-align: center;
    padding: 2em;
}

/* Pied de page */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    text-align: center;
    padding: 1em;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* Premiers titres */
h1 {
    color: #3498db;
}

/* Paragraphe */
p {
    font-size: 18px;
}

.bloc-central {
    text-align: center;
}