React modifies the theme color

currently I have two scss theme color files, and I hope my page can switch between the two themes. What should I do

Apr.09,2021

in fact, this problem belongs to how the front end changes topics
Don't get caught up in the react framework all the time

Let's see how the native one is implemented first

react will naturally understand

https://www.jianshu.com/p/fe8.
https://codeshelper.com/q/10.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1ead146-46baa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ead146-46baa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?