.pt-news .article-content {
    display: block;
    max-height: 0px;
    overflow: hidden;
    transition: max-height .5s cubic-bezier(0, 1, 0, 1);
}

.pt-news .article-content.show {
    max-height: 9999em;
    transition: max-height .5s ease-in-out;
}
.pt-news .showless {
    display: none;
}