#div_aide_infobulle {
    position: absolute;
    top : 0px;
    left:0px;
    background-color: #fff;
    border: solid 2px #0ac;
    padding: 20px;
    z-index: 2000;
    display: none;
    border-radius: 5px;
}

#div_aide_infobulle #div_aide_infobulle_fermer {
    position: absolute;
    font-weight: bold;
    top : 3px;
    right: 3px;
    cursor: pointer;
    padding: 0;
}

#div_aide_infobulle #div_aide_infobulle_fermer:hover {
    color:#0ac;
}