html {
    background: radial-gradient(black, darkblue, blue, skyblue, cyan);
    margin: 2px; 
}

h4 {
    color: red;
    text-align: center;

}

li {
    color: rgb(255, 145, 0);
    text-align: left;

}

a {
    color: rgb(255, 145, 0);
    text-align: left;

}
html, body {
    height: 100%;
    margin: 0;
}