body {
    margin: 0;
}

.ia {
    text-align: center;
    margin-top: 200px;
}

.ia h2 {
    font-size: 35px;
}

.dcp {
    margin: 0 auto;
    width: 80%;
    margin-top: 100px;
}

.txt {
    margin-right: 200px;
}

.txt h3 {
    margin-bottom: 50px;
}

.cerveau img {
    width: 400px;
}

.suite {
    margin: 50px auto;
    width: 80%;
}

.suite h3 {
    margin-bottom: 50px;
}

@media screen and (max-width: 1100px) {
    .cerveau img {
        width: 300px;
        margin-top: 100px;
    }
    .txt {
        margin-right: 80px;
    }
}

@media screen and (min-width: 800px) {
    .dcp {
        display: flex;
    }
}

@media screen and (max-width: 800px) {
    .cerveau img {
        width: 200px;
        margin-top: 50px;
    }
    .cerveau {
        text-align: center;
    }
}

@media screen and (max-width: 1000px) {
    .ia {
        margin-top: 50px;
    }
}

@media screen and (max-width: 1100px) {
    .ia {
        margin-top: 40px;
    }
}