.InFos {
    position:relative;
    float: left;
    margin-right: 6%;
    margin-bottom: 6%;
    text-align:center;
    }

.InFos img {
    width: 5em;
    position: absolute;
    top: 0;
    left: 10px;
}

.EvCont {
    position:relative;
    float: right;
    margin-right: 6%;
    margin-bottom: 6%;
    text-align:center;
    }

.EvCont img {
    width: 5em;
    position: absolute;
    top: 0;
    left: 0;
}

#rabat {
    top: -0.95em;
    opacity: 0;
    transition: opacity 0.2s;
}

#contact:hover #enveloppe{
    opacity: 0;
    transition: opacity 0.2s;
}

#contact:hover #rabat{
    opacity: 1;
    transition: opacity 0.2s;
}