CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 576 · 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 .big? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
3. 3.True or false: .big is a class selector. (a) True (b) False
4. 4.🎯 Which element does the selector #hero style? (a) <li class="big"> (b) <h2 class="hero"> (c) <h2 id="top"> (d) <h2 id="hero">
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) div (b) span (c) #note (d) .intro
7. 7.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
8. 8.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
9. 9.True or false: p is an id selector. (a) False (b) True
10. 10.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
11. 11.True or false: h1 is a class selector. (a) False (b) True
12. 12.True or false: .card is a class selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) .menu (c) #logo (d) #star
14. 14.True or false: .big is an element selector. (a) True (b) False
15. 15.True or false: h1 is an element selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) .box (c) .red (d) .intro
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .main (b) .big (c) #note (d) p
18. 18.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
20. 20.True or false: #hero is a class selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) .logo (b) .big (c) #logo (d) #end
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) li (b) .intro (c) #menu (d) h2
23. 23.True or false: #main is a class selector. (a) True (b) False
24. 24.True or false: img is an element selector. (a) False (b) True
25. 25.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <li class="hero"> (c) <div class="box"> (d) <li id="top">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) .intro (b) .box (c) #intro (d) #main
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #note (b) #main (c) .intro (d) #intro
29. 29.🎯 Which element does the selector #logo style? (a) <div class="logo"> (b) <div id="end"> (c) <div id="logo"> (d) <span class="menu">
30. 30.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
31. 31.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
33. 33.True or false: body is an element selector. (a) True (b) False
34. 34.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <span class="menu"> (c) <li class="menu"> (d) <div>
35. 35.True or false: .menu is a class selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .red (b) h1 (c) .top (d) #intro
37. 37.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .hero (b) .menu (c) h1 (d) .star
38. 38.🎯 Which element does the selector #end style? (a) <li class="big"> (b) <h2 class="end"> (c) <h2 id="hero"> (d) <h2 id="end">
39. 39.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <h2 id="star"> (c) <li class="note"> (d) <h2 class="star">
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) #intro (c) .top (d) p

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