/* Скрытые Zero Blocks */
.uc-expand-section-1,
.uc-expand-section-2 {
    height: 0;
    max-height: none;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;

    transition:
        height 0.9s ease,
        opacity 0.6s ease,
        visibility 0s linear 0.9s;
}

/* Кнопки */
.uc-expand-button-1,
.uc-expand-button-2 {
    cursor: pointer;
    transition: opacity 0.4s ease;
}

/* Кнопка после нажатия */
.uc-expand-button-1.is-clicked,
.uc-expand-button-2.is-clicked {
    opacity: 0.3;
}