body {
    font-family: Georgia;
    text-align:center;
    font-size: 16px;
    margin:0;
    padding: 0;
    background-image: url('images/1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
header {
    background-color: white;
    color:black;
    padding: 10px;
}
h1 {
    font-family: impact;
    font-size:3rem;
    text-transform: uppercase;
}
nav a {
    color:white;
    text-decoration: none;
    margin: 0 15px;
    font-weight:bold;
}
nav a:hover {
    text-decoration: underline;
}
section {
    padding: 30px 20px;
    border-bottom: 1px solid #ccc;
}
footer {
    font-size: 0.75rem;
}
html {
    scroll-behavior: smooth;
}
.bloc {
    max-width: 80%;
    margin: auto;
    padding: 2rem;
    background-color: #ffffff ;
    box-sizing: border-box;
}