CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 469 · 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 id selector (b) a class selector (c) an element selector
2. 2.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
3. 3.🎯 Which element does the selector #end style? (a) <p class="menu"> (b) <span id="hero"> (c) <span id="end"> (d) <span class="end">
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="hero">Hello</p> (a) p (b) #top (c) h1 (d) #box
5. 5.🎯 Which CSS selector matches this element?
   <span class="menu" id="top">Hello</span> (a) #top (b) #menu (c) #intro (d) .note
6. 6.True or false: p is an element selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <div class="big" id="hero">Hello</div> (a) span (b) div (c) .red (d) .hero
8. 8.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <h2 class="logo"> (c) <li class="note"> (d) <h2 id="logo">
9. 9.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <li class="menu"> (c) <p id="top"> (d) <div>
11. 11.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .intro (b) #intro (c) h1 (d) #star
12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
13. 13.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
15. 15.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p class="top"> (c) <p id="intro"> (d) <h1 class="box">
16. 16.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #hero (b) .end (c) .note (d) #note
17. 17.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="big"> (c) <p id="note"> (d) <p class="note">
18. 18.True or false: .card is a class selector. (a) True (b) False
19. 19.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .logo (b) #logo (c) #end (d) h1
21. 21.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) .star (b) .logo (c) #star (d) #end
22. 22.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <span class="note"> (c) <p class="red"> (d) <span class="big">
23. 23.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .hero (b) #hero (c) #top (d) div
24. 24.🎯 Which element does the selector #hero style? (a) <div class="big"> (b) <li id="top"> (c) <li id="hero"> (d) <li class="hero">
25. 25.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <h2 class="box"> (d) <div class="box">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) h2 (b) #end (c) .note (d) li
27. 27.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="star"> (d) <h2 class="star">
28. 28.True or false: .note is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector #end style? (a) <div id="end"> (b) <div id="hero"> (c) <div class="end"> (d) <span class="note">
30. 30.🎯 Which element does the selector li style? (a) <span class="big"> (b) <div> (c) <p id="end"> (d) <li class="big">
31. 31.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) div (b) .big (c) .top (d) span
32. 32.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which element does the selector li style? (a) <li class="note"> (b) <p id="main"> (c) <span class="note"> (d) <div>
35. 35.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
36. 36.True or false: p is a class selector. (a) True (b) False
37. 37.True or false: .big is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <p> (c) <span class="note"> (d) <h1 class="note">
39. 39.True or false: li is an element selector. (a) True (b) False
40. 40.True or false: .menu is a class selector. (a) False (b) True

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