Why does animation only work in Mozila Firefox?

Question

css

-webkit-filter applied to the image: contrast(1.5);
filter: contrast(1.5);
But this code is preceded by an animation with this property:
-webkit-animation: contrast 5s linear;
animation: contrast 5s linear;
In the compilation of keyframes, all prefixes are taken into account (as in the above rules).
PROBLEM - animation runs ONLY in mozilla. The filter is applied in all browsers. HELP!