body {
    margin: 0;
    padding: 0;
    font-family: "Century Gothic", CenturyGothic, AppleGothic, sans-serif;
    /* background: white url(../test.png) fixed;  */
}

#corps {
    margin-left: auto;
    margin-right: auto;
    width: 900px;
    overflow: auto;
}

#titre {
    margin-top: 30px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 10px;
    text-align: right;
    width: 900px;
}

table {
    border-width: 2px;
    border-style: solid;
    border-color: black;
    border-collapse: collapse;
}

td {
    border-width: 1px;
    border-style: solid;
    border-color: black;
}


#menu {
    height: 50px;
    z-index: 98;
}

#menu ul {
    margin: 0;
    padding: 0;
    list-style-type: none;
    text-align: center;
    z-index: 115;
}

#menu li {
    float: left;
    margin: auto;
    padding: 0;
    background-color: #A4A4A4;
    z-index: 110;
}

#menu li a {
    display: block;
    width: 195px;
    color: black;
    font-size: 20px;
    text-decoration: none;
    background-color: #A4A4A5;
    padding: 15px;
    z-index: 100;
    position: relative;
}

#menu li a:hover {
    color: #FFD700;
}

#menu ul li ul {
    display: none;
}

#menu ul li:hover ul {
    display: block;
}

#menu li:hover ul li {
    float: none;
}

#menu li ul {
    position: absolute;
}

.bold {
    font-weight: bold;
    text-decoration: underline !important;
}

#ifra {
    background: white;
    font-size: 20px;
}

a:link {
    color: black;
    text-decoration: none;
}

a:visited {
    color: black;
    text-decoration: none;
}

a:hover {
    color: yellow;
}

a:active {
    color: yellow;
}

#page {
    padding-top: 30px;
}

#pied {
    padding: 10px 0 10px 0;
    margin-top: 20px;
    margin-left: auto;
    margin-right: auto;
    width: 900px;
    background: #A4A4A4;
    text-align: center;
}

@media (max-width: 900px) {
    #titre {
        width: 100%;
        margin-left: -5%;
    }
    #corps {
        width: 100%;
    }
    #pied {
        padding: 10px 0 10px 0;
        margin-top: 20px;
        margin-left: auto;
        margin-right: auto;
        width: 100%;
    }
    #menu li a {
        width: 20vw;
		padding:15px 2vw 15px 2vw;
        font-size: 4vw;
    }
}

.infobulle {
    position: relative;
    /* les .infobulle deviennent référents */
    cursor: help;
}


/* on génère un élément :after lors du survol et du focus :*/

.infobulle:hover::after,
.infobulle:focus::after {
    content: attr(aria-label);
    /* on affiche aria-label */
    position: absolute;
    top: 2.4em;
    left: 50%;
    white-space: pre-wrap;
    transform: translateX(-30%);
    /* on centre horizontalement  */
    z-index: 1;
    /* pour s'afficher au dessus des éléments en position relative */
    background-color: #A4A4A4;
    padding: 5px;
}