#content{ padding:15px; column-count:3; -moz-column-count:3; -webkit-column-count:3;}#content h2{ border-bottom:2px solid;}#content.a-propos h2{ border-color:rgb(4,217,1);}body > header.applications-metier ~ #content h2{ border-color:rgb(205,153,51);}body > header.referencement ~ #content h2,body > header.creation-site-web ~ #content h2{ border-color:rgb(51,103,153);}