.edit-mode #block-header,.edit-mode .preview-mode #block-header{margin-bottom:0}.edit-mode #block-hero,.edit-mode .preview-mode #block-hero{margin-top:0}.edit-mode .edit-mode #header-topnav,.edit-mode .preview-mode #header-topnav{position:relative;margin-bottom:0}.edit-mode #header-section-nav,.edit-mode .preview-mode #header-section-nav{position:relative;margin-top:0;margin-bottom:0}