In today's web environment, Dreamweaver CS3 is not only unsafe but also technologically obsolete. Your best bet is to embrace modern, free alternatives like or Notepad++ , which are safer, more powerful, and fully supported. Learning web development on a modern tool is a far more valuable investment of your time and energy.
You can keep the application on a USB drive or cloud storage and use it on multiple computers without reinstalling. Why Use Google Drive for Portable Applications? adobe dreamweaver cs3 portable google drive
You can simply download, extract, and run the .exe file. In today's web environment, Dreamweaver CS3 is not
It does not recognize modern tags, flexbox, or grid layouts. In today's web environment