For the HTML / CSS / Javascript projects you can share the preview page to anyone online. This will display your website in its full glory. Here's how you can do so:
Navigate to your desired HTML / CSS / JavaScript project environment.
In the top right corner of the page, you will see an arrow icon. Click on that button.
A new tab will open up with your webpage preview.
Share that URL with anyone and they will be able to preview your webpage.