Content tabs are not working

[DiWangShePi]

I've read the following document and wanted to add one Contents Tab for my site.

1. https://squidfunk.github.io/mkdocs-material/reference/content-tabs/#grouping-code-blocks-c_1

I added the following item in mkdocs.yml:

markdown_extensions:
  - pymdownx.superfences
  - pymdownx.tabbed:
      alternate_style: true

Then I tired one Content tabs, its markdown code looks like below:

=== "C"

    ``` c
    #include <stdio.h>

    int main(void) {
        printf("Hello world!\n");
        return 0;
    }
    ```

=== "C++"

    ``` c++
    #include <iostream>

    int main(void) {
      std::cout << "Hello world!" << std::endl;
      return 0;
    }
    ```

Which is nothing but an example from the above document. But the actual result I get is this:

=== "C"

``` c
#include <stdio.h>

int main(void) {
    printf("Hello world!\n");
    return 0;
}
```

=== "C++"

``` c++
#include <iostream>

int main(void) {
  std::cout << "Hello world!" << std::endl;
  return 0;
}
```

It looks like the plugin isn't working, but I'm not sure why. The documentation seems to only require adding the above field to mkdock.yml to enable this feature. Am I missing something?

The version of mkdocs and mkdocs-material are 1.5.3 and 9.5.15.

[alexvoss]

Not sure what the problem is without a screenshot. Have you tried the latest version 9.5.27? Note sure if anything related to this has changed recently but it is always a good idea to take the opportunity to upgrade.

You could also help us investigate the problem by creating a minimal reproduction.

[DiWangShePi]

Thank you very much for your suggestion. When I updated the version and tried to reproduce the problem, I found that the Contents Tab function can be used normally. I think there are some problems with my previous environment.