CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 670 · 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 CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) #intro (b) div (c) .note (d) .menu
2. 2.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="note"> (c) <h2> (d) <h1 class="note">
3. 3.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="red"> (c) <span class="box"> (d) <p class="star">
4. 4.True or false: #logo is an id selector. (a) False (b) True
5. 5.True or false: li is an element selector. (a) True (b) False
6. 6.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="box"> (d) <li class="box">
8. 8.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="red" id="top">Hello</h1> (a) .box (b) .red (c) #intro (d) h2
10. 10.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
12. 12.True or false: .menu is a class selector. (a) True (b) False
13. 13.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #menu (b) #logo (c) span (d) p
15. 15.🎯 Which element does the selector p style? (a) <h1> (b) <p class="red"> (c) <li id="intro"> (d) <h2 class="red">
16. 16.True or false: #main is an id selector. (a) False (b) True
17. 17.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 id="big"> (c) <h1 class="big"> (d) <h2 class="box">
18. 18.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) .menu (b) #star (c) #end (d) h1
19. 19.🎯 Which element does the selector li style? (a) <div> (b) <span class="star"> (c) <p id="hero"> (d) <li class="star">
20. 20.True or false: p is an element selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .box (b) .intro (c) #main (d) span
22. 22.🎯 Can many elements share the same class? (a) Yes (b) No
23. 23.True or false: #logo is an element selector. (a) True (b) False
24. 24.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) li (c) .logo (d) #star
26. 26.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <li class="red">
27. 27.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
29. 29.True or false: .card is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) .note (c) #main (d) #logo
31. 31.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <span class="star"> (c) <div id="red"> (d) <div class="red">
32. 32.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #top (b) span (c) #menu (d) #hero
33. 33.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="top"> (c) <p id="intro"> (d) <h1 class="red">
34. 34.True or false: #logo is a class selector. (a) True (b) False
35. 35.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .menu (b) h2 (c) #intro (d) .intro
37. 37.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <h1 class="big"> (d) <div id="top">
38. 38.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .intro (b) .note (c) #note (d) #main
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #big (b) .big (c) #intro (d) .red
40. 40.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) #logo (c) #star (d) #end

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