CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 508 · 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 element does the selector li style? (a) <div> (b) <p id="end"> (c) <span class="big"> (d) <li class="big">
2. 2.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
3. 3.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 class="end"> (c) <h2 id="end"> (d) <li class="note">
4. 4.True or false: h1 is a class selector. (a) False (b) True
5. 5.True or false: .star is an id selector. (a) True (b) False
6. 6.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
7. 7.True or false: #end is an id selector. (a) True (b) False
8. 8.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
9. 9.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p class="logo"> (c) <p id="end"> (d) <h1 class="star">
10. 10.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #big (b) .red (c) #logo (d) .logo
13. 13.True or false: #main is a class selector. (a) False (b) True
14. 14.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="note"> (c) <h2 class="red"> (d) <h1 class="big">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) h2 (b) #note (c) #main (d) .main
17. 17.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h2 class="star"> (c) <h1 id="hero"> (d) <h1 class="hero">
18. 18.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h1 class="menu"> (c) <h1 id="star"> (d) <h2 class="note">
19. 19.True or false: body is a class selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .box (b) #hero (c) .end (d) div
21. 21.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
22. 22.True or false: img is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #intro (b) #note (c) .big (d) p
24. 24.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #big (b) #logo (c) div (d) .red
26. 26.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h1 class="box"> (c) <h1 class="red"> (d) <h2 class="star">
27. 27.True or false: p is a class selector. (a) True (b) False
28. 28.True or false: #logo is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector p style? (a) <p class="star"> (b) <li id="main"> (c) <h1> (d) <h2 class="star">
30. 30.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span class="main"> (c) <span id="main"> (d) <p class="note">
31. 31.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .hero (b) #top (c) p (d) .big
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) div (b) #main (c) li (d) #big
33. 33.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
34. 34.True or false: .note is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="red"> (c) <h2 id="main"> (d) <h2 id="intro">
36. 36.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div class="menu">
37. 37.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #end (b) #red (c) div (d) .box
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) h2 (b) #star (c) #top (d) .star

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