body { font-family: system-ui, sans-serif; font-size: 1rem; line-height: 1.5;
       margin: 0 auto; padding: 1rem; max-inline-size: 50rem; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.2rem; }
fieldset div { margin-block: 0.4rem; }
label { display: inline-block; min-inline-size: 10rem; }
.virhe { color: #a00; margin-inline-start: 0.5rem; }
.virhe:empty { display: none; }
.onnistui { color: #060; }
.ohje { color: #555; font-size: 0.9em; }
#viesti:empty { display: none; }