.styleEnonce {  font-family: Arial, Helvetica, sans-serif; font-size: 16px; font-weight: bold; color: #000099}
.stylePartie { font-family: Arial, Helvetica, sans-serif; font-size: 18px; font-weight: bold; color: #990000}
.styleChapitre { font-family: Arial, Helvetica, sans-serif; font-size: 24px; font-weight: bold; color: #990000; text-align: center}
.styleQuestion {  font-family: "Times New Roman", Times, serif; font-size: 14px; font-weight: bold}
.styleMath {  font-family: "Times New Roman", Times, serif; font-size: 18px; font-style: italic}