21. Which of the following selector is used to selects the element that is the root of the document?

1. 1. ::selection

   
   
   

   2. :only-of-type

   
   
   

   3. :target

   
   
   

   4. :root

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   :root {background-color: blue;}
   /* sets the background color to blue for the root element */

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22. Which of the following selector is used to select elements that are read-only. When applied to form elements, this would select fields with the readonly attribute set?

1. 1. :read-only

   
   
   

   2. :required

   
   
   

   3. :target

   
   
   

   4. :valid

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   input:read-only {color: gray;}
   /* put all read only fields in gray */

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