Selector:- CSS selectors are essential for targeting specific HTML elements and applying styles, layouts, or visual effects. 
            The provide flexibility, reusability and efficiency.

                   There are five types of selector

             1.Element/Tag Selector
             2.Group Selector
             3.ID Selector
             4.Class Selector
             5.Universal Selector 

1.Element/Tag Selector:-

                       Element selectors are useful for applying global styles, simplifying styling, and ensuring consistency
                       across a website
                       Syntax:-
                                  elementName {property: value; }

2.Group Selector:-

                  A group selector also known as a multi-selector or comma-separated selector, is a CSS technique that allows                                                                         
                   you to apply styles to multiple element or classes simultaneously.
                    Syntax:-
                              selector1,selector2,selector3{property: value; } 

3.ID Selector:-

The ID selector uses the id attribute of an HTML element to select a specific element.
                The id of an element should be unique within a page, so the id selector is used to select one unique element!
                To select an element with a specific id, write a hash(#) 
                Syntax:- 
                         #idName{property: value; } 

4.Class Selector:-

The class selector selects elements with a specific class attribute.
                  To select element with a specific class, write a period(.) 
                  syntax:-
                           .className{property: value; }

5.Universal Selector:-

The asterisk (*) symbol represents the universal selector.
                      Applies styles to every HTML elements in the document
                      Syntax:- 
                              *{property: value; }

Questions

1.what is selector? Explain all selector types.

2.why use of ID selector?

3. What is a CSS selector and why is it important in web development?

4. Explain the purpose and usage of the Element/Tag Selector in CSS.

5. How does the Group Selector work, and why is it useful for applying styles to multiple elements?

6. What is the correct syntax for selecting multiple elements using the Group Selector?

7. Why should the ID attribute be unique within a webpage, and how does the ID Selector target elements in CSS?

8. What is the key difference between an ID Selector and a Class Selector in CSS?

9. How can the Class Selector be used to apply styles to multiple elements in HTML?

10. What is the function of the Universal Selector in CSS, and when should it be used?

11. Provide examples of when it would be more appropriate to use a Class Selector over an ID Selector.

12. Can you combine different CSS selectors (e.g., Element and Class Selectors) to target elements? How?