Regarding the differences caused by quick editing such as ul>li{PHP Chinese website $$}*6

Question

Hello teacher, I am using phpstrom2018.3 as an IDE to learn. When using shortcuts such as "ul>li{PHP Chinese Network $$}*6" to write code, the serial number starts from 1, not zero. . There will be some differences and misunderstandings. How to solve this problem? Thanks!