html {background-color:#222;color:#fff;font-size:62.5%;height:100%;}
body {font-family:'Vollkorn',serif;font-size:2rem;height:100%;margin:0;text-align:center;}

body:before {background:transparent url('https://cards.scryfall.io/art_crop/front/e/a/ea476ee1-67d9-4dd8-a5ac-f68a155eb18b.jpg?1624740590') top center no-repeat;background-size:cover;content:'';opacity:0.1;position:absolute;top:0;bottom:0;left:0;right:0;z-index:-1;}

main {box-sizing:border-box;display:flex;align-items:center;justify-content:center;flex-direction:column;height:calc(100% - 6rem);max-height:calc(100% - 6rem);padding:2rem;}
main p {margin:0 auto 2.5rem;width:90%;max-width:50rem;}
main a {background-color:#fff;border-radius:10rem;color:#222;display:inline-block;padding:1rem 3rem;text-decoration:none;}

footer {font-family:sans-serif;font-size:1.5rem;text-align:center;position:fixed;bottom:1.5rem;width:100%;}
footer a {color:#fff;}