FIG. 1 is bottom, front, and left side perspective view of a fluid container cap showing our new design;

FIG. 2 is a front elevation view of our new design, the rear elevation view being a mirror image thereof;

FIG. 3 is a left side elevation view of our new design;

FIG. 4 is a right side elevation view of our new design;

FIG. 5 is a bottom plan view of our new design;

FIG. 6 is a bottom, front, and left side perspective view of a second embodiment of FIG. 1;

FIG. 7 is a front elevation view of FIG. 6, the rear elevation view being a mirror image;

FIG. 8 is a left side elevation view of FIG. 6;

FIG. 9 is a right side elevation view of FIG. 6; and,

FIG. 10 is a bottom plan view of FIG. 6.

Broken line material of the Figures is for illustrative purposes only and forms no part of the claimed design.