Can you tell me how to remove the empty white space left on the right side of the image With a proper step-by-step process as that would be really helpful

Hey @worried-apple-17483, we don't have a step-by-step tutorial, but here are a few resources that can help you get started: 1. https://styler.botpress.app/ 2. https://botpress.com/docs/cloud/webchat-customization/overview/#styling-the-web-chat

I have a question, i can't customize my botton with css, how can i do this ?

You can customize the chat button with CSS, check out our docs here https://botpress.com/docs/cloud/webchat-customization/chatbot-button/