.authority_mark_autorithy_mark{ width:100%; background-size:cover; display:inline-block; }
.authority_mark_autorithy_mark:after{ content:''; display:block; padding-top:100%; }
.home_vignette_home_vignette{ width:100%; background-size:cover; display:inline-block; }
.home_vignette_home_vignette:after{ content:''; display:block; padding-top:66.666666666667%; }
.news_vignette_news_vignette{ width:100%; background-size:cover; display:inline-block; }
.news_vignette_news_vignette:after{ content:''; display:block; padding-top:74.864864864865%; }