Ulysses distinguishes between writing and formatting the text during export to provide a distraction-free environment. This means that you need to customize the export style to change the appearance of your exported file.

Here's how to customize an export style:

1. Go to the menu Ulysses and select Settings…
2. Switch to Styles and choose a style from the PDF/DOCX section, e.g., Swiss Knife
3. Right-click on the stylesheet and select Duplicate
4. Right-click the duplicated stylesheet and select Edit in
5. Select an editor of your choice, e.g., TextEdit or TextMate
6. From the list below, choose what you want to adjust in your export style to see the next step: 
   
   

   First Line Indent

   To indent the first line of the first paragraph, find or add the selector paragraph and adjust the first-line-indent. Here is an example:

   paragraph {
   first-line-indent: 5pt
   }

   

   
   You can also indent the first line of a paragraph, except for the first paragraph. To do so, find or add the selector paragraph + paragraph and adjust the first-line-indent. Here is an example:

   paragraph + paragraph {
   first-line-indent: 5pt
   }

   

    

    

   Typography

   To adjust the default typography, find the selector defaults and change the name of font-family. Here is an example:

   defaults {
                   	font-family: "Optima"
                   	font-size: 12pt
                   	line-height: 24pt
                   	text-alignment: justified
                   	hyphenation: yes
                   }

    

   

   You can also change the font family of other selectors such as headings or footnotes. In this case, find the specific selector (for example heading-1) and adjust the font to your liking.

    

    

    

   Font Size

   To adjust the default font size, find the selector defaults and adjust the value of font-size. Here is an example:

   defaults {
                   font-family: "Avenir Next"
                   font-size: 14pt
                   line-height: 28pt
                   text-alignment: justified
                   hyphenation: yes
                   }

    

   

   
   You can also change the font size of all selectors, such as headings or footnotes. In this case, find the specific selector (for example heading-1) and adjust it to your liking.

   You may also want to adjust the line height accordingly when you adjust the font size. This will make the result look proportional.

    

    

    

   Text Alignment

   To define the horizontal alignment of a paragraph’s text, find the selector defaults and add or change text-alignment to left, right, center, justified or auto. Here is an example:

   defaults {
                   font-family: "Avenir Next"
                   font-size: 12pt
                   line-height: 24pt
                   text-alignment: left
                   hyphenation: yes
                   }

   

   
   To adjust the text-alignment of your headings, please find the selector heading-all:

   heading-all {
                   line-height: 100%
                   keep-with-following: true
                   text-alignment: center
                   }

   

    

    

   Footnote Placement

   To adjust the placement of your footnotes, find the selector document-settings and change the footnote-placement variable to end-of-document, end-of-section or end-of-page. Here is an example:

   document-settings {
                   footnote-enumeration:  per-section
                   footnote-placement:    end-of-document
                   footnote-style:        decimal
                   }

    

   

    

    

   Custom Header/Footer

   In Ulysses, you can only add the top-level heading or page number to your header or footer. However, a workaround allows you to display customized text in the header or footer of your document.

   Find the selector document-settings and add the following text:

   page-number-format: "Individual Text / %p";
                   page-number-style: decimal;

   
   

   
   Replace the “Individual Text” placeholder with a text of your choice, e.g., the author's name and/or the book title. In case you don’t want your document to contain page numbers, delete %p. 
   
   Afterward, look for the selector area-footer or area-header (depending on where you want to place the custom text) and make sure that the value content is set to page-number. You can also adjust/add the value text-alignment to change the alignment. Here is an example:

   area-header {
                   content: page-number
                   text-alignment: center
                   top-spacing: 10mm
                   bottom-spacing: 3mm
                   }

    

   

    

    

7.  Save the stylesheet (optional: rename it)
8. Select your customized export style in the export preview