.navbar-default{ background: #000000; }#masthead.sticky{ position:fixed; 0; z-index:99999;margin:0 auto 30px; width:100%;}#masthead.sticky .navbar-default{ background:rgba(0, 0, 0, 0.6)}.header{ margin-top: 0}.header{ margin-bottom: 30px}body{ background: url(http://www.thelogues.com/wp-content/uploads/2015/09/logues_bg.jpg) no-repeat fixed 0 0; background-size: cover;}