1. [ File Service Source ]
2. PHP has classes.
   1. Account Class.
   2. [ Tester 1 Source ]. [ Tester 2 Source ].
3. [ Text Shadows Source ]
   1. text-shadow gives an offset, x and y, blur radius and color.
   2. Multiple shadows can be given, separated by comma.
      If you want it darker, you can say it twice.
   3. Of course, text color and background color are very relevant.
4. Geolocation
5. Local storage