How to make animation work in Mozilla?

Question

Animation

Tell me what could be the problem?
@keyframes blink {
0% {
box-shadow: 0 0 10px #000302;
}
50% {
box-shadow: 0 0 0;
}
100% {
box-shadow: 0 0 10px #000302;
}
}
@-o-keyframes blink {
0% {
box-shadow: 0 0 10px #000302;
}
50% {
box-shadow: 0 0 0;
}
100% {
box-shadow: 0 0 10px #000302;
}
}
@-webkit-keyframes blink {
0% {
box-shadow: 0 0 10px #000302;
}
50% {
box-shadow: 0 0 0
}
100% {
box-shadow: 0 0 10px #000302;
}
}
@-moz-keyframes blink {
0% {
box-shadow: 0 0 10px #000302;
}
50% {
box-shadow: 0 0 0;
}
100% {
box-shadow: 0 0 10px #000302;
}
}
.blink {
animation: blink 1.0s linear infinite;
-webkit-animation: blink 1.0s linear infinite;
-ms-animation: blink 1.0s linear infinite;
-o-animation: blink 1.0s linear infinite;
-moz-animation: blink 1.0s linear infinite;
}

Answer 1

The answer is easily found by a search engine