h1 {
    color: black;
    text-align: center;
    text-shadow: 2px 2px 2px darkgray;
}
h2 {
    background-color: darkgrey;
    color: black;
    text-align: center;
    text-shadow: 1px 1px 1px darkgray;
}
h3 {
    background-color: lightgray;
    color: black;
    text-align: center;
}
h4 {
    color: black;
    text-align: left;
}
p {
    text-align: justify;
    font-size: 100%;
    margin-left: 2em;
    margin-right: 2em;
}
ul {
    font-size: 100%;
    margin-left: 2em;
    margin-right: 2em;
}
ol {
        font-size: 100%;
    margin-left: 2em;
    margin-right: 2em;
}