input:required{
  background:url(aste.jpg) 98% center no-repeat;
}
input:focus:invalid{
  border-color:#FF0000;
  background-image:none;
}

input:focus:valid{
  border-color:#56C93F;
}

input:valid{
  background-image:none;
}
table.lban td{
  padding-right:20px;
}

.lignebis {
  background-color:green;
}