sj_catis-selected txspan transitiontransform 03s height 06s padding 06s;what is my code problem

Your code seems to have a syntax error. The transition property should have separate values for each property being transitioned. However, in your code, it seems like you are trying to transition multiple properties (transform, height, and padding) with a single value.

To fix the syntax error, you should separate each property with a comma, like this:

.sj_cat.is-selected .txspan {
  transition: transform 0.3s, height 0.6s, padding 0.6s;
}

This way, each property will have its own transition timing value