HTML uncommon tags optgroup, sub, sup and bdo example code
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Optgroup is used in the select tag to make the drop-down list content more organized. Copy code The code is as follows:<select> <optgroup label="aaa"> <option>Distinguish right from wrong</option> <option>Distinguish right from wrong</option> <option>Distinguish right from wrong</option> </optgroup> <optgroup style="color:#C30" label="bbb"> <option>Distinguish right from wrong</option> <option>Distinguish right from wrong</option> <option>Distinguish<br/>right from wrong</option> </optgroup> </select> sub superscript The sup subscript can be used with <em> for annotations Used together with the dbo dir flag, you can change the output direction of text, right -> left Tip: You can modify some of the code before running |
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