It can not render '\colorbox'

[xiongsp]

In my blog, there is a Latex:

$$
[p\to \{i\}],[r\to \{p\}],[q\to \{i\}],\colorbox{red}{$[s\to \{q,i\}]$},[t\to \{p\}]
$$

In my VS Code, it looks like:

but it didn't work on my blog since it didn't render the '\colorbox':

So how to fix it?Thanks a lot.