style.css

@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;600;700&display=swap');

html,
body{
    font-family: 'Roboto Mono', monospace;
    color: rgba(0,0,0,.5);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: .5em;
    top: 15%;
    background-color: linear-gradient(to right, red, yellow);
}

h1 {
    font: 600 3.5em 'Roboto Mono', monospace;
    color: rgba(0,0,0,.5);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: .5em;
    width: 100%;
}

h3 {
    font: 700 1em 'Roboto Mono', monospace;
    color: rgba(0,0,0,.5);
    text-align: center;
    text-transform: none;
    letter-spacing: .01em;
}