body{
    margin: 4%;
    background-color: #2c8cd1;
    background-image:url(bon/04d6a89f-e034-4724-8bb1-a635d9828999.png);
    min-height: 70vh;
}
.hero{
    text-align: center;
}
.hero h1{
    font-size: 30px;
    color: #fff;
}
.img{
    width: 100%;
}
.hero h2{
    font-size: 20px;
    color: #fff;
}
.lien{
    text-align: center;
    margin-bottom: 5%;
}
.bouton{
    background-color: #ff751f;
    color: #006FBF;
    padding: 10px;
    border-radius: 7%;
    text-decoration: none;
    font-size: 20px;
}
@media(min-width:768px){
    .hero h1{
        font-size: 50px;
    }
    .img{
        width: 100%;
    }
    .lien{
        margin-bottom: 10%;
    }
    body{
        background-size: cover;
    }
    .hero h2{
        font-size: 40px;
    }
}