body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    padding-left: 10em;
    padding-right: 10em;
    background-color: #f5f5f5;
}
h1 {
    color: #333;
    text-align: center;
}
ul {
    list-style-type: georgian;
    padding: 0;
}