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  1. Definition and Usage. The <optgroup> tag is used to group related options in a <select> element (drop-down list). If you have a long list of options, groups of related options are easier to handle for a user.

    • Label

      Label - HTML <optgroup> Tag - W3Schools

    • Option

      Definition and Usage. The <option> tag defines an option in...

    • Ol

      Ol - HTML <optgroup> Tag - W3Schools

    • HTML

      HTML - HTML <optgroup> Tag - W3Schools

    • OptionGroup Object

      Free Tutorials. Enjoy our free tutorials like millions of...

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  3. In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

  4. 23 lut 2020 · 7 Answers. Sorted by: 69. I don't think you can but you can easily reproduce the visual style with css and thus only have options in your select, so everything is selectable. .optionGroup { font-weight: bold; font-style: italic; } . .optionChild { padding-left: 15px; } <select multiple="multiple">

  5. 10 lut 2024 · Enhance the elegance of your dropdown menus with the HTML optgroup tag. Learn how optgroup gracefully organizes and categorizes options, providing a seamless navigation experience. Elevate your form design with the structured simplicity of this tag, improving both functionality and visual appeal.

  6. The optgroup tag generates a group of options within a <select> control's dropdown list of values. A sequence of <option> ...

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