.container{
    max-width: 900px;
}

.btn-azul-escuro {
    background-color: #0c273c;
    color: white;
}

.btn-azul-escuro:hover {
    background-color: #0e3452;
    color: white;
}

.banner {
    display: flex;
    justify-content: center;
}

.banner img{
    max-width: 900px;
}