https://www.youtube.com/watch?v=qT1Nh9zKJpw
https://www.youtube.com/watch?v=Ma5llmuYYus
https://www.youtube.com/watch?v=Husu_-kdK1M
https://www.youtube.com/watch?v=-ciQUnpN29s&list=RDCMUC3oNtvY3sETKZU7wEQyePQQ&index=3
https://www.youtube.com/results?search_query=how+to+create+speedtest+html5