body.active {
    height: 100%;
    overflow: hidden;
}

.modal {
    max-height: calc(100% - 40px);
    display: block;
    padding: 20px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    max-width: 620px;
    width: calc(100% - 40px);
    background-color: #fff;
    border-radius: 10px;
    overflow: auto;
    transition: 0.3s;
}

.modal.active {
    z-index: 9999;
    transform: translate(-50%, -50%) scale(1);
}

.modal_dummy.active {
    display: block;
}

.modal_dummy {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    background-color: rgba(0, 0, 0, 0.5);
}