An embedded style is an internal style sheet. All styles are saved in the HTML file that uses it and not in an external file. Use an embedded style when you want to use custom styles in an individual topic.
When working with embedded styles, consider the following:
If the topic is linked to an external style sheet, the embedded styles override the properties in the external style sheet.
If the topic includes inline styles (blocks of text that are formatted directly in WYSIWYG), the inline styles override the properties of the embedded styles.