body {
    font-size: 1em;
    font-family: Arial;
    color: #242424;
}

h1 {
    font-size: 180%;
    line-height: 180%;
}
h2 {
    font-size: 160%;
    line-height: 160%;
}
h3 {
    font-size: 140%;
    line-height: 140%;
}
h4 {
    font-size: 120%;
    line-height: 120%;
}

a {
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}