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

0 vote99 views1 answer
Online apollo graphql explorer
Html
0 vote102 views1 answer
Html images @2x
Html
1 vote143 views1 answer
Two buttons in same form
Html
0 vote99 views1 answer
Html table cell border not showing
Html
0 vote101 views2 answers
Bootstrap grid 2 rows
Html
205 votes147 views6 answers
Lorem ipsum shortcut
Html
9 votes99 views4 answers
Click angular
Html
4 votes106 views1 answer
Test image as base 64 string
Html
1 vote102 views1 answer
Iframe pdf html5
Html
15 votes103 views2 answers
Bootstrap font-weight bold
Html