CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 717 · 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 #main? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
4. 4.True or false: #main is an id selector. (a) True (b) False
5. 5.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
6. 6.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
7. 7.True or false: img is an id selector. (a) True (b) False
8. 8.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
9. 9.True or false: body is an element selector. (a) True (b) False
10. 10.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
11. 11.True or false: .big is a class selector. (a) False (b) True
12. 12.🎯 Which element does the selector li style? (a) <div> (b) <span class="note"> (c) <p id="hero"> (d) <li class="note">
13. 13.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
14. 14.True or false: #logo is a class selector. (a) True (b) False
15. 15.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h2 id="top"> (d) <h1 class="star">
17. 17.True or false: #hero is a class selector. (a) False (b) True
18. 18.True or false: .big is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 id="box"> (d) <h2 class="box">
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) #star (b) #hero (c) .hero (d) #top
21. 21.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .logo (b) .big (c) #big (d) #end
22. 22.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="big"> (c) <span class="red"> (d) <div class="note">
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) p (c) .star (d) h1
24. 24.True or false: img is an element selector. (a) False (b) True
25. 25.True or false: #hero is an element selector. (a) True (b) False
26. 26.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <h2> (c) <li class="star"> (d) <div id="intro">
27. 27.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="red"> (c) <div class="box"> (d) <div id="red">
28. 28.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) #intro (b) #menu (c) .top (d) li
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) h1 (c) .red (d) .intro
30. 30.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) div (b) .logo (c) #logo (d) #note
33. 33.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 id="end"> (c) <h2 class="logo"> (d) <h2 id="logo">
35. 35.True or false: li is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .box (b) div (c) #red (d) span
37. 37.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <span> (c) <p class="box"> (d) <div class="box">
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) .main (b) .red (c) li (d) h2
39. 39.True or false: img is a class selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) #red (b) .logo (c) #logo (d) h2

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