no , cerco qualcosa del genere:
<element name="border-bottom-width">
<value type="string" name="(border-width-single)" />
<value type="fixed-string" name="thin" />
<value type="fixed-string" name="medium" />
<value type="fixed-string" name="thick" />
<value type="fixed-string" name="inherit" />
</element>
<element name="border-left-width">
<value type="string" name="(border-width-single)" />
<value type="fixed-string" name="thin" />
<value type="fixed-string" name="medium" />
<value type="fixed-string" name="thick" />
<value type="fixed-string" name="inherit" />
</element>
<element name="bottom">
<value type="string" name="(percentage-length)" />
<value type="fixed-string" name="auto" />
<value type="fixed-string" name="inherit" />
</element>