CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 419 · 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 .card? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) #big (b) #hero (c) .hero (d) #top
3. 3.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 id="big"> (c) <li class="box"> (d) <h2 class="big">
4. 4.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
5. 5.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
6. 6.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.True or false: .star is a class selector. (a) True (b) False
9. 9.True or false: #end is an id selector. (a) False (b) True
10. 10.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <h2 class="red"> (c) <span id="intro"> (d) <li>
11. 11.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li id="menu"> (c) <li class="note"> (d) <li class="menu">
12. 12.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) p (b) #intro (c) .big (d) .top
13. 13.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="note"> (d) <li class="big">
14. 14.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <p class="big"> (c) <span id="hero"> (d) <span id="end">
15. 15.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .top (b) #intro (c) p (d) #top
16. 16.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .end (b) .big (c) .red (d) #big
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .menu (b) h2 (c) #star (d) li
18. 18.🎯 Which element does the selector li style? (a) <li class="big"> (b) <p id="hero"> (c) <span class="big"> (d) <div>
19. 19.True or false: .card is a class selector. (a) False (b) True
20. 20.True or false: #top is a class selector. (a) False (b) True
21. 21.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
22. 22.True or false: #logo is an element selector. (a) True (b) False
23. 23.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which element does the selector p style? (a) <h1> (b) <p class="star"> (c) <li id="intro"> (d) <h2 class="star">
25. 25.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <h2> (c) <li class="menu"> (d) <div id="logo">
27. 27.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .box (b) .main (c) h1 (d) .star
28. 28.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <p id="top"> (c) <p class="hero"> (d) <h1 class="note">
30. 30.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <p class="red"> (c) <h1> (d) <li id="intro">
31. 31.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="box"> (c) <h2 id="main"> (d) <span class="box">
32. 32.True or false: img is an element selector. (a) False (b) True
33. 33.True or false: li is an element selector. (a) False (b) True
34. 34.True or false: #top is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) li (b) #hero (c) .menu (d) #star
36. 36.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <li id="top"> (d) <p class="box">
37. 37.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="star"> (c) <li class="star"> (d) <h2>
38. 38.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="menu"> (c) <span id="logo"> (d) <span class="logo">
39. 39.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .box (b) .star (c) #box (d) #main
40. 40.True or false: li is a class selector. (a) False (b) True

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