html, body {
    background-image: url("CFR_1-modified.png");  
}
p{
    font-size: 13px;
}
.encadrer-un-contenu{ border: 2px solid rgb(255, 255, 255);
    padding: 5px;
    background-color: rgb(255, 255, 255);
    right: 80%;
    position: relative;
    top: 660px; 
    left: 20px;
    border-radius : 11px;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}
#toTop
{
    display: none;
    position: fixed;
    right: 10px;
    bottom: 10px;
}