body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    height: 100vh;
    background-image: url('photo_accueil.jpg'); 
    background-size: cover; 
    background-position: center; 
    background-repeat: repeat; 
    background-attachment: fixed;
}
.navbar {
    background-color: #333;
    overflow: hidden;
}
.navbar a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
.navbar a:hover {
    background-color: #ddd;
    color: black;
}
.content {
        color: white; 
        text-align: center; 
        padding: 20px; 
    }

    #MyLink{
        text-decoration: none;
        display: inline-block; 
        padding: 15px; 
        border: 2px solid rgb(255, 0, 0); 
        border-radius: 5px; 
        background-color: #ffffff; 
        color: rgb(255, 0, 0); 
        font-size: 1.5em;
        text-decoration: none;
        transition: background-color 0.3s;
        }