CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 480 · 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.True or false: .card is a class selector. (a) False (b) True
2. 2.True or false: h1 is an id selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <p class="menu" id="hero">Hello</p> (a) #top (b) h1 (c) .menu (d) .hero
4. 4.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
5. 5.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
6. 6.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="box">
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="logo">Hello</h2> (a) .menu (b) .logo (c) #menu (d) #end
8. 8.True or false: .menu is an id selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <span class="menu" id="end">Hello</span> (a) #end (b) #menu (c) .note (d) .end
10. 10.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="note"> (d) <p class="menu">
11. 11.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) h1 (b) .big (c) #intro (d) .red
12. 12.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h2 class="box"> (c) <h1 class="big"> (d) <h1 class="red">
13. 13.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <span> (c) <div class="red"> (d) <p class="red">
14. 14.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <div> (c) <span class="box"> (d) <li class="box">
15. 15.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .hero (b) #top (c) #red (d) div
16. 16.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <h1> (c) <li id="hero"> (d) <h2 class="menu">
17. 17.True or false: h1 is an element selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .big (b) #top (c) #note (d) .top
19. 19.🎯 Which element does the selector div style? (a) <p class="box"> (b) <span> (c) <div class="box"> (d) <h1 id="hero">
20. 20.True or false: .big is an id selector. (a) False (b) True
21. 21.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="note"> (c) <h1 class="red"> (d) <p class="big">
22. 22.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
23. 23.True or false: #top is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <h2 class="red"> (d) <div class="red">
26. 26.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #box (b) #logo (c) div (d) .star
28. 28.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">
29. 29.🎯 Can many elements share the same class? (a) Yes (b) No
30. 30.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) .red (b) .big (c) #main (d) #big
31. 31.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which element does the selector li style? (a) <p id="main"> (b) <span class="star"> (c) <li class="star"> (d) <div>
33. 33.True or false: .star is a class selector. (a) False (b) True
34. 34.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span class="main"> (c) <p class="menu"> (d) <span id="logo">
35. 35.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) .intro (b) .red (c) li (d) #main
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .top (c) #intro (d) .note
37. 37.True or false: .menu is a class selector. (a) True (b) False
38. 38.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <li class="main"> (c) <div class="note"> (d) <li id="main">
40. 40.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .hero (b) span (c) .note (d) #hero

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