css3 animation animation parameter problem

Question

-webkit-animation: pen_left 1s linear 1s 1;

I want to achieve a playback once with a delay of 1s and a duration of 1s. Is it wrong to write it like this? If you add the delay and the number of times, it won’t move. It’s not right to write it alone. What’s going on?

Answer 1

-webkit-animation: pen_left 1s linear 1s 1;
animation: pen_left 1s linear 1s 1;

Answer 2

Remove the 0s and 1 at the end, it’s useless

Answer 3

animation:pen_left 1s linear;

Answer 4

没有触发`animation`你这个问题都没有问清楚，就写了一行代码