Drupal 8.x

I've migrated a bunch of content into a Drupal 8 install. Most everything has been 'promoted to front page.'

I need to un-promote everything. I have the option to 'bulk update fields' but that field is not an option. I could do the edit via MySQL, but I'm struggling to find where this is in the database before doing a update query. I imagine something like "UPDATE node SET promote = 0" but I'm not sure I'm in the right place, as that doesn't work.

I installed rrssb following the instructions for manual installation. Functionality is fine, but for the color scheme I end up with this:

(ok, so it does not want my png, just another drupal wall I hit,  I'll describe it: blue letters on blue, red or black background. )

Good morning community, I am uneasy I need help level GOD, I logged in with my administrator account and I agree perfectly and I get the options that should go as administrator that I am (CONTENT, STRUCTURE, APPEARANCE. Ect). When I try to access any of these options I get a message that says "You do not have permission to visit this page." Please, if someone has an idea,

please help.

Buenos días comunidad, estoy intranquilo necesito ayuda nivel DIOS, me logeo con con mi cuenta de administrador y accedo perfectamente y me salen las opciones que le deben salir como administrador que soy (CONTENIDO, ESTRUCTURA, APARIENCIA. ect). Cuando trato de acceder a cualquiera de estas opciones me sale un mensaje que dice "No tiene permiso para visitar esta página."  

Por favor si alguien tiene una idea por favor ayuda.

Gracias.

Hello lads!

I need some help with the REST services and its access/auth mechanism. I enabled the "Language" REST Resource which comes out of the box. Furthermore i want to authenticate my user with basic_auth, so that's enabled as well.

Hey,

This may be a CSS 101 type of question - but I'm asking because I've tried a half dozen things that don't work.

Bartik is the theme.

1 - I have a view that is a collection of "Machines"

2 - Each Machine, in the View, has 3 Fields; 2 text fields and 1 image field.

3 - The Image field has a bottom border that is goverend by css for any link: