Upgrading to 4.1

How to upgrade with Child theme?

Old Body element <body class="home page-template-default page page-id-701 logged-in admin-bar no-customize-support wp-embed-responsive boxed responsive-mobile-dropdown" itemscope itemtype="http://schema.org/WebPage" > New Body element <body class="home page-template-default page page-id-701 logged-in admin-bar wp-embed-responsive site-header-site-branding-main-navigation responsive-site-contained responsive-site-style-boxed site-header-layout-horizontal site-header-alignment-center header-widget-alignment-spread header-widget-position-top site-content-header-alignment-center sidebar-position-right featured-image-alignment-left title-alignment-left content-alignment-left footer-bar-layout-horizontal footer-widgets-columns-0 scroll-to-top-device-both scroll-to-top-aligmnment-right customize-support nimbus-is-editor" itemscope="" itemtype="https://schema.org/WebPage" data-gr-c-s-loaded="true"> Old nav element<nav id="main-nav" class="main-nav"><ul class="menu"> New nav element<nav id="site-navigation" class="main-navigation" role="navigation" itemprop="name" aria-label="Main Menu">

Old header HTML structure

New header HTML structure