Assertion:
The functionality of the RP element can also be achieved with
the :before and :after CSS2 pseudo-elements in conjunction with the CSS 'content' property.
RUBY element with no RP element:
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HTML
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Plain RUBY element with RP element for surrounding parenthesis:
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HTML
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RUBY element with no RP element. Using CSS :before and :after pseudo-elements for "(" and ")":
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HTML
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