body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: white;
    margin: 0 auto;
    width: 500px;
    border: 3px solid blue;
    padding: 0 2em 1em;
    
}
h1, h2 { color: blue; }
h1, h2, p { text-align: center; }
li { display: inline;  }