.carre-bleu p{
    text-align: center;
}
.container{
    margin-top: 40px;
    margin: 0 auto;
}

h1{
    font-family: sans-serif;
    margin-bottom: 20px;
}

p{
    text-align: left;
    margin-bottom: 70px;
    font-size: 16px;
    line-height: 22px;
    font-family: sans-serif;
}

h2{
    font-size: 20px;
    margin-bottom: 10px;
    font-family: sans-serif;
}

h3{
    margin-bottom: 10px;
    font-family: sans-serif;
}

.bandeau-blanc p{text-align: center;}

.estimation-gratuite p{text-align: center;}