CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 781 · 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.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
2. 2.True or false: .note is an element selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="red" id="main">Hello</h1> (a) .main (b) h1 (c) #red (d) #logo
4. 4.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <p class="note"> (c) <span class="menu"> (d) <span id="star">
5. 5.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
6. 6.True or false: .note is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
8. 8.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
9. 9.True or false: #top is an id selector. (a) True (b) False
10. 10.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
11. 11.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) h2 (b) #red (c) .logo (d) li
13. 13.True or false: #main is an element selector. (a) True (b) False
14. 14.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <p class="note"> (d) <h2 class="note">
16. 16.True or false: .menu is a class selector. (a) False (b) True
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.True or false: .big is an element selector. (a) False (b) True
19. 19.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <span id="menu"> (c) <p class="big"> (d) <span class="menu">
20. 20.True or false: li is a class selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) .menu (b) .main (c) p (d) #logo
22. 22.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h2 id="top"> (d) <h1 class="star">
23. 23.True or false: .card is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #box (b) span (c) .main (d) #main
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .red (b) #main (c) li (d) #intro
26. 26.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
27. 27.True or false: img is a class selector. (a) True (b) False
28. 28.🎯 Which element does the selector p style? (a) <h1> (b) <li id="logo"> (c) <h2 class="big"> (d) <p class="big">
29. 29.True or false: .big is a class selector. (a) True (b) False
30. 30.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
31. 31.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <p id="hero"> (c) <p class="end"> (d) <h1 class="box">
32. 32.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li class="note"> (c) <div class="red"> (d) <li id="note">
33. 33.🎯 Which element does the selector .box style? (a) <h2 class="box"> (b) <h2 class="star"> (c) <h2 id="box"> (d) <li class="menu">
34. 34.True or false: .card is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .red (b) #end (c) .big (d) h2
36. 36.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .big (b) #end (c) #big (d) .red
37. 37.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="big"> (d) <li class="big">
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) h2 (b) .big (c) #big (d) #logo
39. 39.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #end (b) #red (c) .end (d) #hero
40. 40.True or false: .card is an element selector. (a) False (b) True

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