CSS styling font-size does not work in Label Studio

**Describe the bug**
I cannot change the size of the text in "Text" and "TextArea" tags.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to a project.
2. Click on "Settings"
3. Choose "Labeling Interface"
4. Paste this code
```

</View>
```
5. I tested changing the text's size and color. The color works fine but the size still defaults at 16px.

**Expected behavior**
The text inside "Text" and "TextArea" gets changed in size (eg. 30px).

**Screenshots**
<img width="1908" height="956" alt="Image" src="https://github.com/user-attachments/assets/40be68cc-353e-4b5b-85dd-4f57c992f7f4" />

**Environment (please complete the following information):**
- OS: Windows, Docker image
- Label Studio Version: 1.2.0 (heartexlabs/label-studio:latest)

**Additional context**
I also tried to put TextArea inside <View> like the Text, the issue stays the same.