Using Local Font Files
Font Files Next to the CSS
If the font file is not installed in the system, you can place it next
        to your custom CSS file. You will have to declare one or more @font-face
        structures, with the same font-family, but with possible different
        font-weight and font-style properties (as in the example
        below where the TitilliumWeb font is a bundle of multiple TTF
        files, each one for a specific font-weight and style). The TTF
        files were placed in a folder next to the CSS named
        fonts/titillium.
@font-face {
  font-family: titillium;
  font-style: normal;
  font-weight: 400;
  src: url(fonts/titillium/TitilliumWeb-Regular.ttf) ;
}
@font-face {
  font-family: titillium;
  font-style: normal;
  font-weight: 300;
  src: url(fonts/titillium/TitilliumWeb-Light.ttf) ;
}
@font-face {
  font-family: titillium;
  font-style: normal;
  font-weight: 200;
  src: url(fonts/titillium/TitilliumWeb-ExtraLight.ttf) ;
}
@font-face {
  font-family: titillium;
  font-style: normal;
  font-weight: 600;
  src: url(fonts/titillium/TitilliumWeb-SemiBold.ttf) ;
}
section h2 {
    font-family: titillium, Serif;
}Font Files from a Directory
If you have your font files located in a particular directory, you can
        instruct Oxygen PDF Chemistry to load them. To do this, use the
        
    -fonts-dir command-line argument and just specify the name of the font
        directly in the font-family property, as you would for the built-in fonts.
        Using this approach there is no need to define a @font-face structure in
        the CSS.Tip: 
Using 
@font-face
          declarations in your CSS and keeping the font files next to the CSS is the recommended way
          to customize your output. In this way you can create a self-contained customization, with
          no need to deploy fonts in other directories.Font Files from the Oxygen PDF Chemistry Installation
Another way is to copy your font files in the following subfolder:
        [CHEMISTRY_INSTALL_DIR]/config/fonts. Again, there is no need to
        define a 
    @font-face structure in the CSS, just specify the name of the font
        directly in the font-family property.Note: 
When using
          the Oxygen Publishing Engine, the Chemistry processor is installed in the
          [OPE_INSTALL_DIR]/plugins/com.oxygenxml.pdf.css/lib/oxygen-pdf-chemistry
          folder. You will need to add the fonts in the config/fonts
          sub-folder. However, the best approach is to use 
@font-face definitions
          in your CSS , avoid altering the Chemistry installation. In more simple cases, you might create a single @font-face structure.
