body {
    margin: 0;
    padding: 0;
    background-image: url("background.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    font-size: 6vw;
    padding-top: 20vh;
}

@font-face {
    font-family: 'Fira';       /* nom que tu choisis pour la police */
    src: url('FiraSans-Regular.ttf') format('truetype'); /* chemin vers ton .ttf */
    font-weight: normal;
    font-style: normal;
}


.container {
    text-align: center;
    padding-top: 5%;
    color: white; /* texte lisible sur l'image */
    font-family: 'Fira', serif;
}

button {
    margin: 10px;
    border-radius: 2vw;
    color: white;
    background-color: darkred;
    border-color: transparent;
    font-weight: bold;
    font-family: 'Fira', serif;
    font-size: 10vw;
    padding: 8px 20px 10px;
}

button:hover {
    background-color: #5c0000;
    border-color: white;
}

h1 {
    background-color: rgba(0, 74, 0, 0.5);
    font-weight: bold;
    border-radius: 10px;
    padding: 5px 15px;
    display: inline-block;
    margin-top: 3px;
    margin-bottom: 3vh;
}

img {
    width: 76vw;
    padding: 0;
}