CSS - CSS Selectors - Descendant Selector




 CSS Descendant Selector

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Descendant Selectors - Definition and Usage

  • The descendant selector selects all elements that are descendants of a specified element.
  • Ancestor element - The 1st simple selector within this selector represents the ancestor.
  • A descendant selector in CSS is any selector with white space between two selectors without a combinator.
CSS Descendant Selector
  • In CSS, Descendant selector is used to apply a style guideline to a specific element when it lies inside another element.
  • The descendant selector in css matches all the elements that are descendants of a specified element.
  • Ancestor element - The 1st simple selector within this selector represents the ancestor element
  • For example:
    • In -> ol li -> ol is considered as the superior element or parent element
    •      -> li is considered as the descendant element which we are discussing now.
    • In between ol and li ( ol li )- > We got space right, thats called combinator.
  • Combinator can be a
    • whitespace character: a space,
    • horizontal tab,
    • carriage return,
    • line feed, or form feed.

css syntax - css code

  • In css style , rule will apply to <li> element only when it lies inside <ol>
ol li { 
    list-style-type: [Your Style here :-)]; 
}
click below button to copy the code. By - css tutorial - team

Sample html Code - html css

 Tryit<!DOCTYPE html>
<html>
    <head>
        <style>
            ol li { 
                list-style-type: square; 
                }
            ul li { 
                list-style-type: circle; 
                }
        </style>                     
    </head>
    <body>
        <ol>
            <li>WikiTechy Web Development Tutorials</li>
            <ul>
                <li>NodeJS</li>
                <li>PHP</li>
            </ul>
            <li>WikiTechy Database Tutorials </li>
            <ul>
                <li>MySql</li>
                <li>Oracle</li>
            </ul>
        </ol>

    </body>
</html>
click below button to copy the code. By - css tutorial - team

Code Explanation - css style

Code Explanation CSS Descendant Selector
  1. Here, ol li is a Descendant Selector which selects all <li> elements inside <ol> elements.
  2. List style type property is used in css to assign a bullets for the list. Here we have assigned square bullets for the list which appears inside the ordered list.
  3. List style type property is used in css to assign a bullets for the list. Here we have assigned square bullets for the list which appears inside the ordered list.
  4. Here, ul li is a descendant selector which selects all <li> elements inside <ul> elements.
  5. List style type property with a value circle will assign a bullet for the list which appears inside the unordered list.

css tutorial - Output :

Output CSS Descendant Selector
  1. The list text web Development will have square bullet as displayed in the browser window.
  2. The lists NodeJS and PHP will be displayed with circle bullet as displayed in the browser window.
  3. Similarly, the list text Database which appears inside the ordered list <ol> element will be displayed with squared bullet in the browser window.
  4. The lists MySQL and Oracle which appear inside the unordered list <ul> element will be displayed in the browser window with circle bullet as shown.

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