CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 669 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
2. 2.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
3. 3.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
5. 5.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p id="intro"> (c) <p id="top"> (d) <p class="top">
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) #end (b) #hero (c) .end (d) li
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="top">Hello</h2> (a) #intro (b) li (c) h2 (d) #menu
8. 8.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) .box (b) h1 (c) #red (d) .red
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) h2 (b) .note (c) #note (d) #hero
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) h1 (b) #red (c) h2 (d) #intro
11. 11.True or false: img is an element selector. (a) True (b) False
12. 12.True or false: #hero is an element selector. (a) False (b) True
13. 13.🎯 Which element does the selector li style? (a) <div> (b) <li class="big"> (c) <p id="logo"> (d) <span class="big">
14. 14.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
15. 15.True or false: .menu is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) #top (b) .menu (c) .hero (d) .star
17. 17.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
18. 18.True or false: .big is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) #intro (c) h1 (d) #box
20. 20.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <span class="big"> (c) <div class="menu"> (d) <div class="note">
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #hero (b) #red (c) .red (d) div
24. 24.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) #hero (b) li (c) .star (d) div
25. 25.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h2> (c) <li class="note"> (d) <h1 class="note">
28. 28.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #top (b) #intro (c) h1 (d) .box
29. 29.True or false: h1 is an element selector. (a) True (b) False
30. 30.True or false: .card is an element selector. (a) True (b) False
31. 31.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
32. 32.True or false: .menu is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #hero (b) .hero (c) #menu (d) .note
34. 34.🎯 Which element does the selector .red style? (a) <div class="star"> (b) <li class="red"> (c) <li class="box"> (d) <li id="red">
35. 35.🎯 Which element does the selector p style? (a) <p class="box"> (b) <li id="logo"> (c) <h1> (d) <h2 class="box">
36. 36.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <span class="red"> (d) <div id="top">
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) .big (c) #logo (d) #end
38. 38.🎯 Which element does the selector li style? (a) <li class="star"> (b) <span class="star"> (c) <div> (d) <p id="end">
39. 39.🎯 Which element does the selector .menu style? (a) <h1 class="menu"> (b) <h2 class="big"> (c) <h1 class="note"> (d) <h1 id="menu">
40. 40.True or false: h1 is an id selector. (a) True (b) False

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