.titreprincipal {
	font-family:"Times New Roman", Times, serif;
	font-size: 24pt;
	font-weight:bold;
	color: blue;
	text-align: center 
}
.present {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12pt;
	color: #000000;
	font-weight: normal;
	text-align: justify;
}

.nav { 
	font-family: Verdana, Helvetica, Arial, 'Sans Serif';
        color: Black;
        font-weight: bold; 
	font-size: 10pt }

a.nav:link       {  
	color: green;
	text-decoration: none }
	
a.nav:alink      {  
	color: maroon;
	text-decoration: none }

a.nav:visited    {   
	color: blue;
	text-decoration: none }

a.nav:hover     {  
	color: red;
	text-decoration: none }