CSS Properties

Standard W3C CSS Properties

Table 1. The following standard properties are supported by Oxygen PDF Chemistry
Property Supported Values Unsupported Values Notes
background      
background-color      
background-image      
background-position      
background-repeat      
background-size      
bookmark-label      
bookmark-level      
bookmark-state      
border      
border-bottom      
border-bottom-color      
border-bottom-style      
border-bottom-width      
border-collapse separate | collapse    
border-color      
border-left      
border-left-color      
border-left-style      
border-left-width      
border-right      
border-right-color      
border-right-style      
border-right-width      
border-spacing <length>    
border-style      
border-top      
border-top-color      
border-top-style      
border-top-width      
border-width      
bottom-property      
caption-side top|bottom left|right  
color      
column-span      
content      
counter-increment      
counter-reset      
direction      
display inline|block|inline-block|table|table-row|table-cell|table-caption|table-row-group|table-header-group|table-footer-group|table-column |-oxy-morph  

For the display:none, the elements are not eliminated from the DOM, are just collapsed. The text may remain in the document, but is not visible. This is needed for keeping the links working.

For -oxy-morph, read more here.
empty-cells      
float      
font      
font-family      
font-size      
font-src      
font-style      
font-variant small-caps|normal   Cannot be combined with the :first-letter pseudo element or overflow-wrap: break-word CSS property.
font-weight      
height      
image-resolution <dpi>    
left-property      
letter-spacing      
line-height      
list-style      
list-style-image none|url()    
list-style-position      
list-style-type      
margin      
margin-bottom <length>    
margin-left auto|<length>    
margin-right auto|<length>    
margin-top <length>    
max-height <length>    
max-width <length>    
min-height <length>    
min-width <length>    
orphans <number>    
outline      
outline-color      
outline-style      
outline-width      
overflow-wrap break-word   It works by adding soft hyphens (invisible hyphens) in words with 8 or more characters, so it might behave slightly different from the specification. The soft hyphen specifies a place in the text where a hyphenated break is allowed. It becomes visible only after word wrapping at the end of a line.
padding      
padding-bottom      
padding-left      
padding-right      
padding-top      
page      
page-break-after      
page-break-before      
page-break-inside      
position fixed|absolute relative The absolute positioning is done relative to the direct parent. This is a limitation - CSS specifies that you can mark a parent block with position:relative, and absolute children will be placed relative to this.
right-property      
size      
string-set content()|counter()    
table-column-span      
table-layout fixed|auto    
table-row-span      
text-align start|end|left|right|center|justify|justify-all    
text-decoration      
text-decoration-color      
text-decoration-line      
text-decoration-style      
text-indent      
text-transform      
top-property      
transform      
transform-rotation      
unicode-bidi      
vertical-align baseline | sub | super | text-top | text-bottom | middle | top | bottom <length>|<percentage>  
visibility      
white-space normal | nowrap | pre | pre-wrap    
widows <number>    
width      

Extension CSS Properties

Table 2. The following extension properties are supported by Oxygen PDF Chemistry
Property Description Supported Values
-oxy-alt-text Used to specify an alternative description for the element that is used by the PDF readers. 
image {
  -oxy-alt-text: "Image about: " attr(href);
}
 string
-oxy-hyphenation-character Used to specify the Unicode character to be presented when a hyphenation break occurs. To hide hyphens, use the space character.
pre {
  -oxy-hyphenation-character: " ";
}
 <character>|inherit
-oxy-hyphenation-push-character-count Used to specify the minimum number of characters in a hyphenated word after the hyphenation character (the minimum number of characters in the word pushed to the next line).
p {
  -oxy-hyphenation-push-character-count: "2";
}
 <number>|inherit
-oxy-hyphenation-remain-character-count Used to specify the minimum number of characters in a hyphenated word before the hyphenation character (the minimum number of characters in the word left on the line ending with the hyphenation character).
p {
  -oxy-hyphenation-remain-character-count: "2";
}
 <number>|inherit
-oxy-initial-page-number Used to set the initial page number to be used on this particular page sequence.
@page chapter-page {
	-oxy-initial-page-number: auto-odd;
}
 auto|auto-odd|auto-even|<number>|inherit
-oxy-force-page-count Used to impose a constraint on the number of pages in a page sequence. If this constraint is not satisfied, an additional page will be added to the end of the sequence. This page becomes the "last" page of that sequence.
@page chapter-page {
	-oxy-initial-page-number: auto-odd;
}
 auto|evenodd|end-on-even|end-on-odd|no-force|inherit
-oxy-link Used to create links in the PDF output.
link {
  -oxy-link: attr(href);
}
 none|url()
-oxy-page-group Using the start value forces the creation of a new page group (sequence) even if the page before the element has the same name. The auto value uses the W3C algorithm normally, which would merge the current element with the opened page sequence.
chapter {
      -oxy-page-group:start;
      page: chapter;
}
 start|auto
-oxy-pdf-meta-author Used to forward meta-information to the PDF. Represents the author of the publication.
meta[name='author'] {
  -oxy-pdf-meta-author: attr(value);
}
 string
-oxy-pdf-meta-custom Used to forward meta-information to the PDF. Represents a generic custom document property. Should have two strings, the name and the value.
metadata {
  -oxy-pdf-meta-custom: attr(name) attr(value);
}
 string
-oxy-pdf-meta-description Used to forward meta-information to the PDF. Represents the description of the publication. 
meta[name='description'] {
  -oxy-pdf-meta-description: attr(value);
}
 string
-oxy-pdf-meta-keyword Used to forward meta-information to the PDF. Represents a single keyword from the publication. The processor should aggregate all keyword definitions and separate them by comma.
keyword {
  -oxy-pdf-meta-keyword: content(text);
}
 string
-oxy-pdf-meta-keywords Used to forward meta-information to the PDF. Represents the keywords of the publication. The value should contain the keywords separated by commas.
meta[name='keywords'] {
  -oxy-pdf-meta-keywords: attr(value);
}
 string
-oxy-pdf-meta-title Used to forward meta-information to the PDF. Represents the title of the publication. 
meta[name='title'] {
  -oxy-pdf-meta-title: attr(value);
}
 string
-oxy-pdf-tag-type Maps an element to a PDF accessibility tag. 
section {
  -oxy-pdf-tag-type: "Sect";
}
 string
-oxy-style An Oxygen extension used to define additional styles for an element (for example, collected from an attribute). 
div {
     font-weight:bold;
     color:red;
     -oxy-style:attr(style);
}
The value of the style attribute from the div element is parsed as a collection of CSS properties and applied over the current element styles. For instance, if the style attribute has the value color:green; border: 1pt solid red, it will combine with the existing properties, resulting in:
font-weight:bold; 
color:green;
border: 1pt solid red
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