External HTML , CSS , JS page - want to get working using Joomla Content item

Hi , I have a html page that has some css hover stuff and uses JS. The actual content is in html and want to include that in Joomla content item so it can be updated. I tried this myself and doesnt work....possibly due to image location. Coder to fix this in our DEV and provide instructions to migrate to Live instance. Its probably something very simple that I havent done. Will provide more info on request. Cheers! ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). 2) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 3) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Employer's environment--Deliverables must be installed by the Worker in ready-to-run condition in the Employer's environment. b) For all others including desktop software or software the employer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this project. ## Platform Joomla , php , css , html