Nested elements are elements that are placed within another element.
When an element is nested within another, all lines of the nested element will <em>inherit </em>the <em>properties </em>of the parent element.
Take for instance, the following HTML code
<em><p align = "center"> I am a <b>boy</b> </p></em>
In the above HTML code,
The bold element (i.e. <b>) is nested in the paragraph element (i.e. <p>)
The paragraph element is aligned center.
This means that, all elements in the paragraph element (including the <em>bold element</em>) will be centralized.
Hence, all lines of a nested element will <em>inherit </em>the properties of the parent element.
Read more about nested elements at:
brainly.com/question/22914599