Page 120 - FIFA Rules

Celebration of a goal
While it is permissible for a player to demonstrate his joy when a goal has been
scored, the celebration must not be excessive.
Reasonable celebrations are allowed, but the practice of choreographed
celebrations is not to be encouraged when it results in excessive time-wasting
and referees are instructed to intervene in such cases.
A player must be cautioned if:
in the opinion of the referee, he makes gestures which are provocative,
derisory or inflammatory
he climbs on to a perimeter fence to celebrate a goal being scored
he removes his shirt or covers his head with his shirt
he covers his head or face with a mask or other similar item
Leaving the field of play to celebrate a goal is not a cautionable offence in itself
but it is essential that players return to the field of play as soon as possible.
Referees are expected to act in a preventative manner and to exercise common
sense in dealing with the celebration of a goal.
Showing dissent by word or action
A player who is guilty of dissent by protesting (verbally or non-verbally) against
a referee’s decision must be cautioned.
The captain of a team has no special status or privileges under the Laws of the
Game but he has a degree of responsibility for the behaviour of his team.