*{
    margin: 0;
}

body{
    background-color: black;
    color: white;
}

.chavepix {
    text-align: center;
    display:block;
    justify-content: center;
}

.qrcodepix{
    width: 150px;
    justify-content: center;
    margin-top: 150px;
}

h1,h2{
    font-size: 25px;
    margin-top: 25px;
}