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|
+++
title = "Logo presentation example"
outputs = ["Reveal"]
[logo]
src = "github-logo.png"
alt = "GitHub logo with Octocat"
[reveal_hugo]
custom_theme = "reveal-hugo/themes/robot-lung.css"
margin = 0.2
+++
## logo-example
This presentation shows how to add a logo to each slide, like the GitHub one you see above.
You can generalize the concept to add any additional markup to your presentations.
---
[See the code for this presentation](https://github.com/dzello/reveal-hugo/blob/master/exampleSite/content/logo-example/_index.md)
---
First, create a partial called `body.html` and put it in this directory:
```text
layouts/partials/{section}/reveal-hugo/body.html
```
---
Substitute `{section}` for `home` if you are adding a logo to the presentation at `content/_index.md`. Otherwise, substitute the name of the Hugo section where your presentation lives.
---
The presentation you're looking at right now is in `content/logo-example`, so the partial to add the logo lives in:
```text
layouts/partials/logo-example/reveal-hugo/body.html
```
---
💡 Tip: to make the logo appear in every presentation, put it here:
```text
layouts/partials/reveal-hugo/body.html
```
---
💡 Tip: In addition to `body.html`, you can create partials `head.html` and `end.html` in any of those directories.
---
- head.html: Add markup just before the closing `</head>` tag
- body.html: Add markup just before the closing `</body>` tag
- end.html: Add markup just before the closing of the Reveal.js `div.slides` container
---
Once the partial exists in `body.html`, we can add our image tag to it:
```html
<img id="logo" src="{{ .Param "logo.src" }}" alt="{{ .Param "logo.alt" }}">
```
---
In this example, the src and alt attributes are set to values from the content's front matter or site's configuration, which you can see in `logo-example/_index.md`:
```toml
[logo]
src = "/images/github-logo.png"
alt = "GitHub logo with Octocat"
```
---
To position the logo, we can add a style tag to `body.html`:
```html
<style>
#logo {
position: absolute;
top: 20px;
left: 20px;
width: 250px;
}
</style>
```
<small>
💡 Depending on the theme you're using, your styles will be different. <br>You may also prefer to put your CSS in an external file or your Reveal.js theme.
</small>
---
# 🤗
That's it.
Happy Hugo-ing!
|
