Child Safety Seat

FIG. 1 is a top, front, right side perspective view of a child safety seat, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the drawings depict portions of the child safety seat that form no part of the claimed design.