form button { width: 242px; height: 52px; padding: 0; margin: 5px 5px 0 0; border: 1px solid black; line-height: 80px; font: normal 14pt "Arial",sans-serif; color: white; text-align: center; background: black url(../img/quiz/button-on.jpg) top left no-repeat; }
form button:active { background-image: url(../img/quiz/button-down.jpg); border-color: red; }
p.attenzione { color: #900; }