.accordeon {
    position:relative;
    overflow:hidden;
}
.accordeon [type="checkbox"].leaccordeon:not(:checked).leaccordeon,
.accordeon [type="checkbox"].leaccordeon:checked.leaccordeon {
    display:none;
}


.accordeon [type="checkbox"].leaccordeon  + label .accordeon.titre {
    display:inline;
}

.accordeon  [type="checkbox"].leaccordeon + label:after,
.accordeon  [type="checkbox"].leaccordeon + label:before {
    display:inline;
    font-size:larger;
    font-weight:bold;
    font-style:normal;
}

.accordeon  [type="checkbox"].leaccordeon:checked + label:before {
    content:"-";
}

.accordeon  [type="checkbox"].leaccordeon:not(:checked) + label:before {
    content:"+";
}

.accordeon [type="checkbox"].leaccordeon + label .accordeon.titre:hover {
    cursor: pointer;
}

.accordeon .accordeon.contenu {
    opacity:0;
    height:0;
}

.accordeon [type="checkbox"].leaccordeon:checked ~ .accordeon.contenu {
    opacity:1;
    height:auto;
    transition:all 1s ease .1s;
}