What are block levels elements in html

Answer 1

Block level elements work as a container in a html document. It occupies the entire space of its parent elements creating a block.

A block-level element always starts on a new line and takes up the full width available (stretches out to the left and right as far as it can).

check this documentation for further information
https://www.w3schools.com/html/html_blocks.asp

Answer 2

Try it yourself, to see the difference between block, inline, inline-block and default.
https://code.sololearn.com/WUWrSMiCq8v6/?ref=app