.titre  { font-size: 10pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 0 10 0 10; color: #FFFFFF; font-weight: bold}
.a4 { color: #FFFFFF; font-size: 10pt; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold}
.a2 { color: #3366CC; font-size: 8pt; font-family: Verdana, Arial, Helvetica, sans-serif}
.a2:hover: { color: #FF0066 }
.titre5 { background-color:rgb(187,255,187); font-size: 9pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 5 10 0 10; font-weight: bold; }
.titre2  { font-size: 9pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 5 10 0 10; color: #000000; font-weight: bold; }
.a3 { color: #3366CC; font-size: 8pt; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold}
.a3:hover: { color: #FF0066 }
.titre3  { font-size: 7pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 5 5 0 5; color: #000000; font-weight: bold; }
.contenu  { font-size: 8pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 0 10 0 10; color: #000000; font-weight: bold}
.titre4  { font-size: 10pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 0 10 0 10; color: #000000; font-weight: bold}
.titre8  { font-size: 7pt; font-family: Verdana, arial, helvetica, "lucida sans", sans-serif; margin : 5 5 0 5; color: #FFFFCC; font-weight: bold; }
<span style="background-color: rgb(255,255,0)">