body {
    background-color: #111;
    display:flex; flex-direction:column; justify-content:center;
    min-height:100vh;
    margin: auto;
    max-width: 800px;
    text-align: center;
}

* {
    color: #fff;
}

p, a {
    font-size: 20px;
    font-family: 'IBM Plex Sans', sans-serif;
    margin: 5px;

}

.pt_logo {
    max-height: 150px;
    padding-bottom: 40px;
}