You can use absolute or relative URI/URLs addresses.
To use a relative link, set the address from the root folder of your site by using a slash in front of the folder in the root directory.
<img src="/images/balloons/image.jpg" alt="balloons" />
To use an absolute link:
<img src="http://www.example.com/images/balloons/image.jpg" alt="balloons" />
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