The style scope identifier
It is actually a non-negative integer.
Specifically, 0 represents global scope, which means it is a global style in stylesheets. However, in elements, 0 means it does not match any stylesheets other than the global styles.
0
The style scope identifier
It is actually a non-negative integer.
Specifically,
0represents global scope, which means it is a global style in stylesheets. However, in elements,0means it does not match any stylesheets other than the global styles.