CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 573 · 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.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) .intro (b) #big (c) #main (d) div
3. 3.True or false: h1 is an element selector. (a) False (b) True
4. 4.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
6. 6.True or false: img is a class selector. (a) False (b) True
7. 7.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
8. 8.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <p class="red"> (d) <span id="note">
9. 9.🎯 Can many elements share the same class? (a) Yes (b) No
10. 10.True or false: #top is an id selector. (a) True (b) False
11. 11.True or false: #end is an id selector. (a) True (b) False
12. 12.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
13. 13.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) #logo (c) #main (d) h1
15. 15.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <li> (c) <h2 class="red"> (d) <span id="top">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #star (b) h2 (c) #end (d) .end
17. 17.True or false: p is a class selector. (a) True (b) False
18. 18.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <p class="big"> (c) <span class="menu"> (d) <span id="menu">
19. 19.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <p id="intro"> (d) <li class="menu">
20. 20.True or false: .note is an element selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .top (b) #intro (c) h1 (d) p
22. 22.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) p (b) .main (c) .box (d) span
23. 23.True or false: .star is an element selector. (a) True (b) False
24. 24.True or false: body is a class selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) div (b) #intro (c) .top (d) .star
26. 26.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <h2 class="hero"> (c) <h2 id="top"> (d) <li class="star">
27. 27.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) .red (b) .main (c) span (d) .big
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .big (b) .intro (c) div (d) span
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .top (b) #top (c) h1 (d) #red
30. 30.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) h2 (b) #big (c) #top (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) #big (c) #end (d) h2
33. 33.True or false: .card is an id selector. (a) True (b) False
34. 34.True or false: h1 is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #top (c) .top (d) #menu
36. 36.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <span class="star"> (d) <div class="red">
37. 37.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <h1 id="intro"> (d) <p class="star">
38. 38.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div class="box"> (c) <div id="box"> (d) <span class="menu">
39. 39.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <div class="note"> (d) <li class="star">
40. 40.True or false: #main is an id selector. (a) True (b) False

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