.illus{
    cursor: pointer;
    /*-transition: all 0.7s cubic-bezier(1, 0, 0, 1.01);-*/
}

.fleche {
    transition: all 0.4s cubic-bezier(0.47, 2.02, 0.31, -0.36) ;
}

.fleche{
    background-size: 42px 42px !important;
    transform-origin: 50% 50% !important;
}

.fleche:hover {
    background-size: 55px 55px !important;
}

.btn {
    cursor: pointer;
}