CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 141 · 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.True or false: p is a class selector. (a) True (b) False
2. 2.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
3. 3.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
4. 4.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 id="main"> (c) <h2 class="star"> (d) <h1 class="main">
8. 8.True or false: #top is an element selector. (a) False (b) True
9. 9.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div id="red"> (c) <span class="star"> (d) <div class="red">
10. 10.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which element does the selector #logo style? (a) <h1 class="big"> (b) <p class="logo"> (c) <p id="end"> (d) <p id="logo">
12. 12.🎯 Which element does the selector #hero style? (a) <h2 class="box"> (b) <h1 id="top"> (c) <h1 class="hero"> (d) <h1 id="hero">
13. 13.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
14. 14.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) #end (c) h2 (d) #big
16. 16.True or false: img is an element selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #intro (b) #star (c) .menu (d) p
18. 18.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #note (b) .end (c) li (d) .big
19. 19.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="box"> (c) <h1 class="star"> (d) <h2 class="menu">
20. 20.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <div class="box"> (c) <li id="hero"> (d) <li class="hero">
21. 21.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="box"> (c) <span class="star"> (d) <span id="box">
22. 22.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <p id="main"> (d) <h1 class="note">
23. 23.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) span (b) div (c) #logo (d) .star
24. 24.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="intro"> (d) <h1 class="big">
27. 27.True or false: .note is a class selector. (a) True (b) False
28. 28.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
29. 29.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <p class="star"> (c) <div class="star"> (d) <span>
31. 31.🎯 Which element does the selector li style? (a) <span class="red"> (b) <div> (c) <p id="main"> (d) <li class="red">
32. 32.🎯 Which element does the selector p style? (a) <h1> (b) <li id="end"> (c) <p class="star"> (d) <h2 class="star">
33. 33.🎯 Which element does the selector .red style? (a) <li class="star"> (b) <h2 class="red"> (c) <h2 class="box"> (d) <h2 id="red">
34. 34.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .note (b) #menu (c) .menu (d) #end
35. 35.True or false: li is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #box (b) #hero (c) .hero (d) .star
37. 37.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 id="box"> (d) <h2 class="box">
38. 38.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>
39. 39.True or false: #top is a class selector. (a) False (b) True
40. 40.True or false: #end is an id selector. (a) True (b) False

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