.projet-image{

    width: 700px;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;

}
.btn{

    display: block;
    width: 180px;
    margin: 20px auto;
    text-align: center;

}
.projet{

    text-align: center;

}
.projects h1{

    text-align: center;

    margin-bottom: 40px;

}