CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 179 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.True or false: .card is a class selector. (a) False (b) True
3. 3.True or false: body is an id selector. (a) False (b) True
4. 4.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: #top is a class selector. (a) False (b) True
6. 6.True or false: .note is an element selector. (a) False (b) True
7. 7.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <li id="logo"> (c) <li id="main"> (d) <div class="menu">
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
9. 9.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <span id="hero"> (d) <div class="note">
11. 11.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #star (b) .end (c) .star (d) #hero
12. 12.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
13. 13.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="box"> (c) <p class="star"> (d) <p id="box">
14. 14.True or false: p is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #hero (b) li (c) .menu (d) div
16. 16.🎯 Which element does the selector div style? (a) <p class="star"> (b) <div class="star"> (c) <span> (d) <h1 id="end">
17. 17.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="main"> (c) <h2 class="red"> (d) <h1 id="logo">
18. 18.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h2 id="logo"> (c) <h1 class="note"> (d) <p>
19. 19.True or false: #main is an id selector. (a) False (b) True
20. 20.True or false: .star is an id selector. (a) False (b) True
21. 21.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div id="menu">
22. 22.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
23. 23.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 class="big"> (d) <h1 id="note">
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .note (b) #note (c) li (d) #intro
25. 25.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
27. 27.True or false: img is an id selector. (a) True (b) False
28. 28.True or false: .card is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #intro (b) p (c) .top (d) #top
30. 30.True or false: #hero is an id selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) #box (c) div (d) .star
32. 32.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="main"> (c) <li class="box"> (d) <h1 class="box">
35. 35.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 class="intro"> (c) <h1 id="main"> (d) <h2 class="note">
36. 36.True or false: .menu is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .main (b) #big (c) .big (d) .red
38. 38.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <p class="menu"> (d) <h2 class="menu">
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) .box (c) #main (d) li
40. 40.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector

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