body {
    color: white;
    background: black;

    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

h1 {
	font-size: 3em;

}
h1, h2 {	text-align: center;
}
ul {
    list-style-position: inside;
}
h1 {
	color: purple;
}
img {
    width: 50%;
    height: auto;
    }