Website hosting on aws ubuntu with node and gulpfile

I have deployed a static website using node and gulpfile on an ubuntu instance.

Steps:

  1. Copied rar file on the ubuntu instance and extracted the contents.

  2. Ran npm install and npm start

  3. The server was running on port 3000.

  4. Accessing the public IP of my ec2 instance on 3 seperate systems.

If i scroll on one laptop the effect is observed on all laptops

enter image description here

i am not sure why this is happening. Would love some assistance.