CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 473 · 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.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
2. 2.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <li> (c) <div class="menu"> (d) <span id="hero">
3. 3.🎯 Which CSS selector matches this element?
   <div class="note" id="logo">Hello</div> (a) div (b) .big (c) span (d) #end
4. 4.True or false: #top is an id selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="star" id="top">Hello</h2> (a) #star (b) .top (c) #intro (d) #top
6. 6.True or false: img is a class selector. (a) True (b) False
7. 7.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <div> (c) <span class="red"> (d) <li class="red">
8. 8.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span id="hero"> (c) <span class="hero"> (d) <p class="big">
9. 9.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
11. 11.True or false: p is a class selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #star (b) h1 (c) .menu (d) h2
13. 13.True or false: .card is a class selector. (a) True (b) False
14. 14.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
15. 15.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #end (b) .red (c) span (d) #logo
16. 16.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="hero"> (c) <h2> (d) <li class="note">
17. 17.True or false: #hero is an id selector. (a) True (b) False
18. 18.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div class="note"> (d) <div id="note">
19. 19.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
20. 20.True or false: .star is an id selector. (a) True (b) False
21. 21.🎯 Can many elements share the same class? (a) Yes (b) No
22. 22.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="red"> (c) <p class="star"> (d) <span class="box">
24. 24.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="menu"> (c) <h1 class="star"> (d) <h1 id="star">
26. 26.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
27. 27.True or false: li is an element selector. (a) False (b) True
28. 28.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p class="box"> (c) <p id="box"> (d) <h1 class="menu">
29. 29.True or false: .star is a class selector. (a) False (b) True
30. 30.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
31. 31.True or false: #end is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) #top (b) .red (c) h2 (d) li
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .star (b) #box (c) .top (d) .box
34. 34.🎯 Which element does the selector .menu style? (a) <div class="note"> (b) <span class="big"> (c) <div class="menu"> (d) <div id="menu">
35. 35.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div class="box"> (c) <div id="box"> (d) <span class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) .hero (c) .big (d) h2
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) h1 (c) #menu (d) .note
38. 38.True or false: img is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #top (b) #menu (c) .note (d) span
40. 40.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <p class="red"> (c) <span class="intro"> (d) <span id="intro">

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