Develop web application functional specification and snippets

Develop company web development standard to define the Coding and Technical requirements for Web Site and Web Application Development in order to derive Consistency, Security and Speed in coding. Wherever possible snippet codes shall be developed for elements The frontend technology shall be HTML5, CSS3, JS, JQuery, Bootstrap4, Ajax The backend(server side) coding shall be in PHP7+ and database shall be MySQL. A collection of web links will be provided to help Freelancer.