[midterm] Added: main style sheet

Signed-off-by: Ahmed Abdelsamad <ahmed.kamal.abdelsamad@gmail.com>
[midterm] updated: Objects used to represent data

Signed-off-by: Ahmed Abdelsamad <ahmed.kamal.abdelsamad@gmail.com>
[midterm] Added : reset style sheet


Removes all default values in browsers (such as margin for body etc..)

Signed-off-by: Ahmed Abdelsamad <ahmed.kamal.abdelsamad@gmail.com>