### Bug description

When adding the metadata `title` and `title-block-banner` with an image path. The background image is rendered in the banner and the H1 in the banner.

![image](https://user-images.githubusercontent.com/80908902/233412025-00c2e185-8ff1-431d-9ef4-d22a4eea7201.png)


This is caused by quarto adding following to the html page:
```html
<style>
    .quarto-title-block .quarto-title-banner,
    .quarto-title-block .quarto-title-banner h1,
    .quarto-title-block .quarto-title-banner h2,
    .quarto-title-block .quarto-title-banner h3,
    .quarto-title-block .quarto-title-banner h4,
    .quarto-title-block .quarto-title-banner h5,
    .quarto-title-block .quarto-title-banner h6
    {
      background-image: url(images/heros/home_hero.jpg);
background-size: cover;
    }
    </style>
``` 
The background-image is added to `.quarto-title-block .quarto-title-banner` and `.quarto-title-block .quarto-title-banner h1`.

This is rendered using RC quarto 1.3.333, fedora 37. You can find a small repo preview in https://github.com/KaiWaldrant/quarto-title-block.

quarto check output:

```
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.1: OK
      Dart Sass version 1.55.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.3.333
      Path: /home/kai/opt/quarto-1.3.333/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.10.9 (Conda)
      Path: /home/kai/anaconda3/bin/python
      Jupyter: 5.2.0
      Kernels: python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.2.3
      Path: /usr/lib64/R
      LibPaths:
        - /usr/lib64/R/library
        - /usr/share/R/library
      knitr: (None)
      rmarkdown: (None)

      The rmarkdown package is not available in this R installation.
      Install with install.packages("rmarkdown")
``` 


### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [ ] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
- [X] Please provide the output of `quarto check` so we know which version of quarto and its dependencies you're running.
cscheid
2023-04-20T15:23:15Z
KaiWaldrant
bug
v1.3
closed
background image title banner being double rendered
https://github.com/quarto-dev/quarto-cli/issues/5257