Just a cool button

This is a cool custom web component.

Custom Elements : Custom elements , in way allows you to create your custom fully, valid HTML elements , with custom template , behavior and tag-names. eg.(<simple-button>).
Shadow DOM : Capable of isolating CSS and JavaScript, create a scoped style for custom elements.
HTML Templates : User-defined templates in HTML that aren’t rendered until called upon. The <template> tag is used for creating templates.
Read more about web components : A great tutorial for web components