:root{font-family:system-ui,sans-serif;color-scheme:light dark}body{margin:0 auto;max-width:760px;padding:28px 20px}label{display:block;margin-top:14px}input{box-sizing:border-box;display:block;width:100%;padding:10px;margin:6px 0 12px}button{padding:9px 14px;cursor:pointer}button:disabled{cursor:default}#principal{overflow-wrap:anywhere}#message{min-height:1.5em}[hidden]{display:none!important}