.table { border-style: hidden;
border-width: 0px;
width: 800px;
text-align: left;
margin-left: auto;
margin-right: auto;
}
.tab {
border-width: 2px;
width: 400px;
text-align: left;
border-style: solid;
border-cellspacing: 0;
border: 2px;
border-color: black;
background-color: rgb(255, 204, 153);
}

th /* Les cellules d'en-tête */
{
background-color: navy;
color: white;
font-size: 30px;
font-family: Arial, Times New Roman, sans-serif;
}
/* Les cellules du tableau */
.td
{
color: black;
font-size: 12px;
font-family: Arial, Times New Roman, sans-serif;
border-width: 2px;
border-style: solid;
border-color: red;
}
.td_bas
{
border-bottom-style: dashed;
border-color: red;
border-width: 2px;
}