body{font-family:system-ui,sans-serif;max-width:40rem;margin:3rem auto;padding:0 1rem;line-height:1.5}
input,button{font:inherit;padding:.5rem .75rem}
input[type=email]{width:100%;box-sizing:border-box;margin:.5rem 0}
.grade{display:inline-block;min-width:2rem;padding:.1rem .5rem;border:2px solid currentColor;border-radius:.25rem;font-weight:700;text-align:center}