body{
    margin-top: 1em;
    margin-bottom: auto;
    font-family: 'Times New Roman', Helvetica;
}
h1 {
    text-align: center;
    font-size: 3em;
}
h2{
    text-align: center;
    font-size: 3em;
}
h3{
    text-align: center;
    font-size: 3em;
}
footer{
    text-align: left;
}