References
[1] https://www.w3schools.com/html/html5_intro.asp
[2] http://www.html-5-tutorial.com/
[3] https://www.tutorialspoint.com/html5/
[4] https://www.udemy.com/learn-html5-programmingfrom-scratch/learn/v4/overview
[1] https://www.w3schools.com/html/html5_intro.asp
[2] http://www.html-5-tutorial.com/
[3] https://www.tutorialspoint.com/html5/
[4] https://www.udemy.com/learn-html5-programmingfrom-scratch/learn/v4/overview