div.azen.azen1.azen2.azen3 {
    .az-flex-viewport {
        max-height: 2000px;
        -webkit-transition: all 1s ease;
        -moz-transition: all 1s ease;
        -ms-transition: all 1s ease;
        -o-transition: all 1s ease;
        transition: all 1s ease;
    }
}