h1 {
    color: green;
    font-family: sans-serif;
    font-size: 18px;
}
h2 {
    color:gray;
    font-family: sans-serif;
    font-size: 16px;
}
h3 {
    color: black;
    font-family: sans-serif;
    font-size: 14px;
}
h4 {
    color: black;
    font-family: sans-serif;
    font-size: 13px;
}
p {
    font-family: sans-serif;
    font-size: 13px;
    text-align:justify
}