CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 499 · 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 CSS selector matches this element?
   <p class="box" id="logo">Hello</p> (a) h1 (b) .box (c) #box (d) #end
2. 2.True or false: #main is an element selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) .end (b) #note (c) .big (d) .note
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
5. 5.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <li class="big"> (c) <h2 id="menu"> (d) <h2 class="note">
6. 6.🎯 Which element does the selector p style? (a) <h1> (b) <li id="hero"> (c) <h2 class="big"> (d) <p class="big">
7. 7.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 id="big"> (c) <h2 class="red"> (d) <h2 class="big">
9. 9.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
10. 10.True or false: #top is an element selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .intro (b) #intro (c) #big (d) #main
12. 12.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <h2 class="big"> (c) <li class="red"> (d) <h2 id="note">
14. 14.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
15. 15.True or false: img is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #hero (b) .end (c) .red (d) #red
17. 17.True or false: #hero is a class selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .big (b) #big (c) .red (d) span
19. 19.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="box"> (d) <li class="box">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) h1 (b) .menu (c) #hero (d) .end
22. 22.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #main (b) #star (c) .intro (d) .star
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) h2 (b) .note (c) .menu (d) .top
24. 24.True or false: #top is an id selector. (a) False (b) True
25. 25.True or false: img is an element selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #intro (b) .note (c) div (d) .top
27. 27.🎯 Which element does the selector li style? (a) <div> (b) <li class="menu"> (c) <p id="top"> (d) <span class="menu">
28. 28.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <p> (c) <span class="star"> (d) <h1 class="star">
29. 29.True or false: .big is a class selector. (a) True (b) False
30. 30.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <p class="box"> (c) <span id="big"> (d) <span class="red">
31. 31.🎯 Can many elements share the same class? (a) No (b) Yes
32. 32.True or false: .star is an id selector. (a) False (b) True
33. 33.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <li id="big"> (c) <div class="box"> (d) <li class="red">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) .note (c) h2 (d) .menu
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #main (b) .main (c) #note (d) .big
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) #top (b) .hero (c) h2 (d) #hero
38. 38.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
39. 39.True or false: p is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <li> (c) <div class="note"> (d) <span id="hero">

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