article.promo {
    background-image: url("../img/background-study.png");
}


section.appstores footer input[type="submit"] {
    background-color: #1CB3EA;
}

article.description {
    background-color: #F7F8F6;
    color: #807C7B;
}

article.description h1,
article.description h2,
article.description h3 {
    color: #1CB3EA;
}