Nested select option in html

<select>
  <optgroup label="1">
     <option>Nested Option 1</option>
     <option>Nested Option 2</option>
  </optgroup>
  
  <optgroup label="2">
     <option>Nested Option 1</option>
     <option>Nested Option 2</option>
  </optgroup>
</select>

Similar codes

1 vote214 views1 answer
Marquee speed
Html
0 vote253 views1 answer
Use html code for close icon after zoom imgage
Html
0 vote231 views1 answer
Html tableaux
Html
0 vote215 views6 answers
Svg color css
Html
0 vote208 views1 answer
Custom elements cannot query slot tags html5
Html
0 vote217 views1 answer
Disabled attribute is not working in html
Html
1 vote234 views2 answers
Check html
Html
13 votes218 views4 answers
HTML Text Formatting
Html
22 votes237 views4 answers
Run a function when a button has the onclick
Html
0 vote239 views1 answer
Canadian postal code pattern input html
Html