WP Admin Focus Full Width
function admin_css() {
echo '<style>
.focus-on #wpcontent {
margin-left:0;
width:100%;
}
. .focus-on ##wpbody-content .metabox-holder{
width:100%;
}
.focus-on #poststuff #post-body.columns-2 {
margin-right:20px;
}
.focus-on .wp-editor-expand div.mce-toolbar-grp,
.focus-on .wp-editor-expand #wp-content-editor-tools {
width:100% !important;
}
</style>';
}
add_action('admin_head', 'admin_css');