html, body {
    margin: 0;
    padding: 0;
}

body {
    background-image: url('/image/entraveau.jpg');
    background-size: cover;
}

.container {
    border: 1px solid black;
    margin: 20%;
    padding: 2.5% 5%;

    background-color: rgba(255, 255, 255, 0.7);
}

.container h1 {
    font-size: 40px;
    text-align: center;
}

.container p,
.container em {
    font-size: 18px;
}