What is a inspect element?

Inspect element is nothing but the properties of respective pages you open in the web. you can see these properties by clicking right mouse button click and select 'inspect element' and you can change the properties too but it'll not help you much because once you reload the page the changes you made will not get saved and old property will act on the page.

you can use the inspect element option for study purpose, like, what type of properties they insert to make those web pages, this is for software engineer's and developer's.