You can use WP Users Media plugin: https://wordpress.org/plugins/wp-users-media/ From description: … disable the ability for users to access other members files and attachments through the Media Button and Featured Image sections…
The contents that existing in the header and footer that is the content that visible in all pages will usually integrate using theme option. so take the admin and go to appearance->Theme option Then check the contact details is there in that .
You can hook into the pre_post_update action hook, and check both post’s category and editor. Here’s a quick example: // Hook to save_post to do some checks add_action( ‘pre_post_update’,’wpse315124_save_post_check’ ); function wpse315124_save_post_check( $post_id, $post_data ){ // Check user’s role and post’s category if( has_category ( ‘some-category’, $post_id ) && current_user_can( ‘editor’ ) ) { // … Read more
Here are a couple options. You could just create a stylesheet that loads in the admin area, and enable that for certain users if needed. Here is an example of loading a stylesheet in the admin for users with the role of “shopmanager”. function my_admin_styles(){ $user = wp_get_current_user(); if( ! empty($user) && count(array_intersect([“shop_manager”], (array) $user->roles … Read more
You need to call add_theme_support( ‘editor-styles’ ) in the after_setup_theme hook. More information
The posts page, which is always index.php (main template) of your theme, cannot be edited by neither, Guttenberg nor Classic Editor. Create a child theme, and copy index.php from your parent theme to the child theme. Then you can edit your child’s index.php, using external text editor.
Displaying Most Recently Edited Post
WordPress theme editor not showing
Blank Screen Edit Page when using Editor Role
Unable to find interface that lets me edit text on the front page