Standard CSS grammar does not allow white space between a number and that number’s unit of measurement. For example, “line-height: 12pt” is valid, while “line-height: 12 pt” is not. However, the latter usage is not uncommon in HTML authoring for the web.
The Reader interprets units strictly. For example, it interprets “line-height: 12 pt” as equivalent to “line-height: 12” because of the space between number and the unit of measurement. As a result, the CSS is meaningless without an associated unit.
When taking HTML using CSS, global searches for “ pt” and “ em” and similar poorly-formed CSS and remove the spaces. When authoring for Reader, never place a space between a number and the corresponding unit.
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