what is html ?

Answer 1

As you have started the html course, I am pretty sure that you can find it out by yourself if you read the lessons.

https://www.sololearn.com/Course/HTML/?ref=app

Answer 2

Abdo Aziz please use the searchbar before asking as this may be faster and provide relevancy to your question and knowledge.

Here are a few threads asking the same question.

https://www.sololearn.com/discuss/9425/?ref=app
https://www.sololearn.com/discuss/1044651/?ref=app
https://www.sololearn.com/discuss/1125108/?ref=app
https://www.sololearn.com/discuss/941928/?ref=app
https://www.sololearn.com/discuss/438369/?ref=app
https://www.sololearn.com/discuss/94697/?ref=app
https://www.sololearn.com/discuss/548064/?ref=app