CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 821 · 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 .box style? (a) <li class="box"> (b) <li class="star"> (c) <li id="box"> (d) <div class="menu">
2. 2.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="star" id="top">Hello</h2> (a) li (b) #star (c) #top (d) .top
5. 5.True or false: .star is a class selector. (a) False (b) True
6. 6.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h2 class="big"> (c) <li id="top"> (d) <h1>
7. 7.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <li class="red"> (c) <h2 class="logo"> (d) <h2 id="logo">
8. 8.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) #big (b) .end (c) p (d) #hero
9. 9.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <h2 class="red"> (d) <div class="red">
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) .hero (b) #top (c) .note (d) .menu
11. 11.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <li class="star"> (c) <h2 class="box"> (d) <h2 class="red">
12. 12.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
13. 13.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
14. 14.True or false: .card is an id selector. (a) True (b) False
15. 15.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <div class="red"> (c) <li class="top"> (d) <li id="top">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .logo (b) #end (c) .menu (d) .note
19. 19.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p id="main"> (c) <h1 class="star"> (d) <p class="main">
20. 20.True or false: .note is a class selector. (a) False (b) True
21. 21.True or false: body is a class selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #box (b) .star (c) #end (d) #logo
23. 23.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #logo (b) .big (c) p (d) #big
24. 24.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) #top (b) .menu (c) p (d) h1
25. 25.True or false: img is a class selector. (a) True (b) False
26. 26.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <p class="menu"> (c) <h1 class="big"> (d) <p class="note">
28. 28.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
29. 29.True or false: p is an element selector. (a) True (b) False
30. 30.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #top (b) #intro (c) div (d) #big
32. 32.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 id="menu"> (d) <h2 class="menu">
33. 33.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <h1 class="red"> (c) <p id="note"> (d) <p class="big">
34. 34.🎯 Can many elements share the same class? (a) No (b) Yes
35. 35.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .note (b) #menu (c) #intro (d) div
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #intro (b) .top (c) h1 (d) p
37. 37.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) div (b) .note (c) #note (d) .big
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #red (b) #logo (c) .box (d) h1
39. 39.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <span id="main"> (c) <p class="big"> (d) <span id="logo">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #main (b) .big (c) li (d) #big

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