Browser css compatibility issue(Add code)

The same CSS is the same chrome version. They are exposed differently on different PCs. What is the cause? Except for Chrome browser, it is exposed normally.

Screenshot of the problem phenomenon and The code was long, so I replaced it with a screenshot of the code content.

The actual phenomenon can be checked in the link. https://www.smgames.kr

Sorry for the messy question because I'm not familiar with Stack Overflow.

[image1][1]
[image2][2]
[code1][3]
[code2][4]
[css1][5]
[css2][6]
[css3][7]

[1]: https://i.stack.imgur.com/zqUJw.jpg
[2]: https://i.stack.imgur.com/H4v07.jpg
[3]: https://i.stack.imgur.com/hAF8J.png
[4]: https://i.stack.imgur.com/8s7dx.png
[5]: https://i.stack.imgur.com/yjDVP.png
[6]: https://i.stack.imgur.com/LAn39.png
[7]: https://i.stack.imgur.com/MPYFS.png