.loading:before {
    position: absolute !important;
    top: 0;
    left: 0;
    background: url(../img/loader.gif) no-repeat center center rgba(255, 255, 255, 0.7);
    display: block;
    width: 100%;
    height: 100%;
    content: " ";
    z-index: 50;
}
.loading {
    position: relative !important;
}
.izy_callback_bouton {
    position: fixed;
    padding: 20px;
    background: #ff6900;
    color: #fff;
    width: 172px;
    height: 90px;
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    z-index: 10;
    cursor: pointer;
}
.izy_callback_bouton .icon {
    text-align: center;
}