.at-collapsibleArticleContainer__content {
    opacity: 0;
    height: 0;
    overflow: hidden;
    transition: height ease-in-out .2s;
}

.at-collapsibleArticleContainer--open .at-collapsibleArticleContainer__content {
    opacity: 1;
    height: auto;
    transition: all ease-in-out .2s;
}

.at-collapsibleArticleContainer__title:hover {
    cursor: pointer;
}

.at-collapsibleArticleContainer__title::after {
    content: '\02c3';
    font-family: 'fontello';
    display: inline-block;
    width: 5px;
    margin-left: 0.3em;
    margin-right: 0;
    color: #3eabcb;
    transition: transform 0.3s ease-out;
}

.at-collapsibleArticleContainer--open .at-collapsibleArticleContainer__title::after {
    transform: rotate(90deg);
}