CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 105 · 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 .note? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="top"> (d) <h2 class="big">
3. 3.🎯 Which CSS selector matches this element?
   <div class="menu" id="top">Hello</div> (a) span (b) .menu (c) #menu (d) .note
4. 4.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <p id="main"> (c) <div> (d) <span class="menu">
5. 5.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <span class="star" id="top">Hello</span> (a) .menu (b) #star (c) #intro (d) span
7. 7.True or false: .card is a class selector. (a) False (b) True
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
9. 9.True or false: img is a class selector. (a) False (b) True
10. 10.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <p class="note"> (c) <span id="star"> (d) <span class="star">
11. 11.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 class="menu"> (d) <h1 id="menu">
12. 12.🎯 Can many elements share the same class? (a) Yes (b) No
13. 13.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
14. 14.True or false: p is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) #main (c) p (d) #menu
16. 16.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <li class="menu"> (c) <li id="menu"> (d) <div class="big">
17. 17.🎯 Which element does the selector li style? (a) <span class="big"> (b) <p id="main"> (c) <div> (d) <li class="big">
18. 18.True or false: #hero is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) h1 (b) #main (c) .main (d) .red
20. 20.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) h1 (b) .star (c) .top (d) #intro
21. 21.True or false: .big is an element selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .main (b) li (c) .red (d) .box
23. 23.True or false: h1 is an element selector. (a) False (b) True
24. 24.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 class="top"> (c) <h2 id="intro"> (d) <li class="red">
26. 26.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
27. 27.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #box (b) .box (c) .end (d) #hero
28. 28.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) h1 (b) .end (c) #end (d) #hero
29. 29.True or false: img is an element selector. (a) False (b) True
30. 30.True or false: .note is an id selector. (a) False (b) True
31. 31.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h2 id="end"> (c) <p> (d) <h1 class="box">
33. 33.True or false: li is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <h2 class="red"> (c) <span id="top"> (d) <li>
35. 35.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="main"> (c) <div class="note"> (d) <span>
37. 37.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="logo"> (c) <h1> (d) <h2 class="note">
38. 38.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="red"> (c) <h1 id="top"> (d) <h1 class="hero">
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #red (b) span (c) .logo (d) .box
40. 40.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <li class="note"> (c) <h2 id="hero"> (d) <h2 id="top">

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