Introduction

This module provides a block to change the theme to it's grayscale version by adding a simple css to the body tag.

Features

• Adds a css class to the body tag on the block image click.
• Remembers the user choice by storing it's value in the user session.
• Provides a twig template to make it easy to change the styling.

Installation

Simply enable the module.

Setup

Add the 'Black and white image' block to your choice of region from the 'Block Layout' interface.