html, body 
{
    background: #eee;
    font-family: Segoe UI, Helvetica Neue, Arial, Sans-Serif;
    font-size: 1em;
    margin: 0;
    padding: 0;
}

body
{
    margin: 20px auto;
    width: 640px;
}

h1
{
    font-family: Segoe UI Light, Segoe UI, Helvetica Neue, Arial, Sans-Serif;
    font-weight: normal;
}