h1, p  {
    text-align: center;
}
body {
    background-color: #000000;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #ffffff;
}
.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}