CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 21 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
2. 2.True or false: .card is a class selector. (a) False (b) True
3. 3.True or false: .menu is an id selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) #big (b) #end (c) h1 (d) .end
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .big (b) .top (c) #note (d) #top
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="red" id="logo">Hello</h1> (a) h1 (b) #end (c) #red (d) .logo
7. 7.True or false: #main is an id selector. (a) False (b) True
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) .big (b) .hero (c) h1 (d) #note
9. 9.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <p class="big"> (d) <li id="top">
10. 10.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
11. 11.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p class="note"> (c) <p class="menu"> (d) <p id="menu">
12. 12.🎯 Which element does the selector #main style? (a) <h1 class="menu"> (b) <p id="main"> (c) <p id="logo"> (d) <p class="main">
13. 13.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <div class="box"> (c) <h2 class="box"> (d) <li>
14. 14.True or false: .menu is an element selector. (a) True (b) False
15. 15.True or false: #logo is a class selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #logo (b) #end (c) .logo (d) .big
17. 17.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <li class="box"> (c) <li id="red"> (d) <div class="star">
18. 18.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) p (b) #star (c) #hero (d) .hero
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #red (b) h1 (c) .box (d) p
22. 22.True or false: .note is an id selector. (a) True (b) False
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.True or false: .card is an element selector. (a) True (b) False
25. 25.True or false: #main is a class selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) p (b) #star (c) .menu (d) #end
27. 27.True or false: .note is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
29. 29.True or false: p is an element selector. (a) True (b) False
30. 30.True or false: body is a class selector. (a) False (b) True
31. 31.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
32. 32.True or false: .card is an id selector. (a) False (b) True
33. 33.🎯 Which element does the selector #hero style? (a) <h2 class="big"> (b) <h1 id="hero"> (c) <h1 class="hero"> (d) <h1 id="top">
34. 34.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .menu (b) p (c) #star (d) #main
35. 35.True or false: .star is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) #red (b) span (c) #top (d) .hero
37. 37.True or false: #top is an id selector. (a) True (b) False
38. 38.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #star (b) .intro (c) #main (d) #intro
40. 40.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector

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