.hide-header{opacity:0;margin-top:-200px!important}.show-header{opacity:1;margin-top:0px!important}#global-header-section{-webkit-transition:all 0.5s ease!important;-moz-transition:all 0.5s ease!important;-o-transition:all 0.5s ease!important;-ms-transition:all 0.5s ease!important;transition:all 0.5s ease!important}