Hey @rishier827, If you want customize the buttons, colors or other properties of the Rasa webchat, you try the below steps which worked for me:
I have written style.css to customize the css properties of the webchat, I have inspected the UI and have got the class names of the elements that I wanted to change.
Step1: Make sure you include the webchat.js before you import the style.css as shown below:
Step2: updating the css properties in the style.css file:
Stpe3: Now you can check the UI:
Let me know if this helps you. 