styles.css

body {
    font-family: "Segoe UI Emoji", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 10pt;
}

h1 {
    font-size: 25pt;
    color: red;
}

h2 {
    font-size: 20pt;
    color: blue;
}

h3 {
    font-size: 15pt;
    color: green;
}

h4 {
    font-size: 12pt;
    color: pink;
}

img {
    max-width: 100%;
    max-height: 800px;
}