Publié le 13/07/2018 #1: add "data-spy" class Open the file templates/t3_bs3_blank/tpls/blocks/mainnav.php the replace the code: <nav id="t3-mainnav" class="wrap navbar navbar-default t3-mainnav"> with: <nav id="t3-mainnav" class="wrap navbar navbar-default t3-mainnav" data-spy="affix" data-offset-top="70"> #2: add style for the sticky menu Open the templates/t3_bs3_blank/less/navbar.less then replace the style rule: .t3-mainnav { border-left: 0; border-right: 0; margin-bottom: 0; border-radius: 0; with: .t3-mainnav { border-left: 0; border-right: 0; margin-bottom: 0; border-radius: 0; left: 0; right: 0; top: 0; z-index: 999; Once it's done, please compile LESS to CSS. Small screens menu syst