The child safety seat for transporting a child in a vehicle is configured for the child to be secured to the child safety seat with a safety belt of the vehicle, and is characterized in that the child safety seat comprises a belt pad which is adapted to be arranged on the safety belt. The belt pad of the child safety seat preferably comprises a lower component and an upper component, wherein the lower component is configured to be positioned between the safety belt and the child when the child is seated in the child safety seat and is secured in the child safety seat with the safety belt, and wherein the upper component is configured to be positioned on the side of the safety belt opposite to the side the lower component is positioned on.