.block-gray {
    position: fixed;
    width: 100%;
    overflow: hidden;
}
.assento-btn-additional-style {
    left: 20px;
    width: 200px;
    height: 50px;
    position: fixed !important;
}
.assento-backdrop-additional-style {
    left: 0;
    top: 0;
    z-index: 999;
    position: fixed;
}


@media screen and (max-width: 1023px) {
    .assento-mobile {
        display: none !important
    }
}