Fix pizza module styling on iOS

Ghost User
2018-01-24T20:48:00+01:00

1. ![](https://gitlab.science.ru.nl/thalia/ThaliApp-react/uploads/47fe78de6face59b1e95105ea86eb085/png)

#### New behaviour
Steps to validate that it works:

1. ![Screen_Shot_2017-12-21_at_15.52.04](/uploads/4d09ff31ea7e97bdfa6979f6c4202946/Screen_Shot_2017-12-21_at_15.52.04.png)