.some_class{} 和 *.some_class{} 有什么区别。
这是否意味着该类仅应用于另一个标签内的标签，还是根本没有区别？
最佳答案
没有区别 - 请参阅 here
The universal selector, written "*", matches the name of any element type. It matches any single element in the document tree.
If the universal selector is not the only component of a simple selector, the "*" may be omitted. For example:
*[lang=fr] and [lang=fr] are equivalent.
*.warning and .warning are equivalent.
*#myid and #myid are equivalent.
关于CSS - 课前的星号是什么意思？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20282043/