FIG. 1 is a perspective view of a cover for a container showing our new design;

FIG. 2 is a top plan view of the cover for a container; the bottom plan view of the cover being a mirror image thereof;

FIG. 3 is a right side elevational view of the cover for a container; the left side elevational view being a mirror image thereof;

FIG. 4 is a front elevational view of the cover for a container; and,

FIG. 5 is a rear elevational view the cover for a container.

The broken lines shown are for illustrative purposes only and form no part of the claimed design.