### Disable Glass Styling for Plain Text Markdown Cards

Source: https://github.com/wessamlauf/homeassistant-frosted-glass-themes/blob/main/README.md

Use this `card_mod` configuration to disable the glass and border styling for Markdown cards that should only display plain text. This is necessary because themes cannot reliably detect 'text-only' variants.

```yaml
card_mod:
  style: |
    ha-card {
      background: none !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
      box-shadow: none !important;
      border: none !important;
    }
    ha-card::before {
      content: none !important;
      background: none !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
    }
```

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