# Template design

You can add or update templates through [Publications](https://docs.struct.com/pim3/reference/publications) > [Templates](https://docs.struct.com/pim3/reference/publications/templates).

### Edit content main

1. Click "Content"
2. Choose "Main"
3. Modify HTML
4. Click "Update template"

### Edit content header

1. Click "Content"
2. Choose "Header"
3. Add [elements](https://docs.struct.com/pim3/reference/publications/templates/edit-template/template-design/header-footer-elements)
4. Click "Update template"

### Edit content footer

* Click "Content"
* Choose "Footer"
* Add [elements](https://docs.struct.com/pim3/reference/publications/templates/edit-template/template-design/header-footer-elements)
* Click "Update template"

### Edit table of contents

1. Click "Table of Contents"
2. Modify HTML
3. Click "Update template"

### Edit Category

1. Click "Category"
2. Modify HTML
3. Click "Update template.

### Edit Preview settings

1. Click "Settings"
2. Modify Product and language along with additional [details](https://docs.struct.com/pim3/reference/publications/templates/edit-template/template-design/template-preview-settings)

### Download preview

1. Click "Download"-button