#lampelien{
    background-size: auto;
    background: url("../../images/leventusbis.png");
    height: 572px; 
    width: 330px;
    display: block;
    background-size: cover;
    left: 410px;
    position: relative;
    transition-property: background-size;
    transition-duration: 2s;
}
/*#lampelien:hover{
    background: url("../../images/leventusbisallumee.png");
    background-size: cover;
    top: 1px;
}*/
.imgindex{
    display: block;
    height: 572px; 
    width: 330px;
    position: absolute;
    top: 1px;
    width: 330px;
    opacity: 0;
    transition-property: opacity;
    transition-duration: 2s;
}
.imgindex:hover{
    opacity: 1
}