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.open > .dropdown-menu,.nav> li:hover .dropdown-menu { display: inline-block; text-align: center; } .dropdown-menu > li{ display: inline-block; } .dropdown-menu > li > a:focus, .dropdown-menu > li > a:hover { color: inherit; text-decoration: none; background-color: inherit; }

$(function(){ $('li.dropdown > a').each(function () { var scroll = $(this).offset().left; $(this).next('.dropdown-menu').css({ 'width': '100vw', 'padding-top': '1em', 'padding-bottom': '1em', 'left': '-' + scroll + 'px' }); }); })