CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 875 · 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 #hero style? (a) <span class="star"> (b) <div id="hero"> (c) <div id="top"> (d) <div class="hero">
2. 2.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="box" id="logo">Hello</h1> (a) .logo (b) #end (c) .star (d) #logo
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
5. 5.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="box" id="end">Hello</h1> (a) .end (b) #end (c) .star (d) #hero
7. 7.True or false: .star is a class selector. (a) True (b) False
8. 8.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector div style? (a) <p class="star"> (b) <span> (c) <h1 id="top"> (d) <div class="star">
11. 11.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #top (b) .note (c) .menu (d) p
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #big (b) .red (c) #main (d) #intro
13. 13.🎯 Which element does the selector p style? (a) <h1> (b) <p class="menu"> (c) <h2 class="menu"> (d) <li id="end">
14. 14.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .top (b) span (c) div (d) #intro
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
18. 18.True or false: .card is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <div id="intro"> (d) <span class="box">
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) .note (b) h2 (c) h1 (d) #menu
21. 21.True or false: .menu is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h1 class="red">
23. 23.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #logo (b) .box (c) .star (d) #box
24. 24.🎯 Which element does the selector span style? (a) <h1 class="menu"> (b) <span class="menu"> (c) <h2 id="top"> (d) <p>
25. 25.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="star"> (c) <div class="note"> (d) <li class="menu">
26. 26.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <span class="note"> (d) <div class="end">
29. 29.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) .menu (b) #end (c) #menu (d) p
30. 30.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <li class="red"> (c) <h2 id="note"> (d) <h2 class="note">
31. 31.True or false: .card is an id selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) #end (c) h1 (d) .logo
33. 33.True or false: #hero is an id selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) .note (c) span (d) .intro
35. 35.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
36. 36.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="big"> (c) <h2 class="red"> (d) <h1 class="note">
37. 37.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="intro"> (c) <h1 class="note"> (d) <h2>
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .big (b) span (c) #intro (d) #note
39. 39.🎯 Which element does the selector #hero style? (a) <div class="menu"> (b) <li class="hero"> (c) <li id="top"> (d) <li id="hero">
40. 40.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 id="star">

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