html <progress> css progress bar Element

this is the most simply way to change <pregress> css!

simply&easy&quick.

**CSS3 & HTML5 progress Element** 이게 젤 쉬움

https://codepen.io/anon/pen/jdJxXK

HTML5 Progress Bars In Depth

https://techbug.tistory.com/214

The HTML5 progress Element

https://css-tricks.com/html5-progress-element/

Progress bar css

https://techbug.tistory.com/214