The ornamental design for a lid for a container, as shown and described.
FIG. 1 is a top front perspective view of a lid for a container;
FIG. 2 is a front view of the lid of FIG. 1;
FIG. 3 is a rear view of the lid of FIG. 1;
FIG. 4 is left side view of the lid of FIG. 1;
FIG. 5 is a right side view of the lid of FIG. 1;
FIG. 6 is a top view of the lid of FIG. 1; and,
FIG. 7 is a bottom view the lid of FIG. 1.
The broken lines show structure that is not part of the claimed design, but rather are directed to environment in which the design is associated, or show portions of the article on which the design is embodied or applied, and are for illustrative purposes only. The broken lines form no part of the claimed design.