h2 {
 font-size: 20px; 
 color: red; 
 text-align: center;
 text-decoration: underline
 }
 body {
  font-size: 12px; 
 color: navy; 
 text-align: center;
}
table {
border-style: outset;
border-collapse: collapse;
}
td{
/* border-style peut etre solid, dashed...*/
border: 1px;
border-style: dotted;
border-width: thin;
Border-color: red;
}
.present {
background-color: #BADEAF;
font-size: 12px; 
}
.absent {
background-color: #DADBCE;
font-size: 12px; 
color:red;
}
.info {
color: red;
 font-size: 15px; 

}