.page-heading{border-bottom:1px solid #e9e9e9;padding:24px 0;background-color:#fff}.page-heading__title{padding:0;margin-bottom:8px}.article-preview{margin-bottom:24px}.article-preview__header{margin-bottom:4px}.article-preview__title{padding:4px 0}.article-preview__topics{padding-bottom:8px}.topic-page__content{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;margin:24px auto}.topic-page__list{list-style:none}