li {
    color: green;
    font-size: 20px;
}

ul {
    list-style-type: square;
}

h1 {
    color: red;
    font-size: 30px;
    text-align: center;
}

h2 {
    color: blue;
    font-size: 24px;
}

p {
    color: black;
    font-size: 18px;
    text-align: left;
    text-indent: 20px;
}