body { padding: 0; margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif; } h1 { font-size: 10em; margin-top: 0; } p { color: rgb(107, 114, 128); font-size: 1em; margin-bottom: 10px; margin-top: 5px; } .card { max-width: 620px; margin: 0 auto; padding: 16px; border: 1px solid lightgray; border-radius: 16px; } .card p:last-child { margin-bottom: 0; } canvas { display: block; margin: 0 auto; background-color: black; }