CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 649 · 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="end">Hello</li> (a) li (b) .note (c) #hero (d) .end
2. 2.True or false: .menu is a class selector. (a) False (b) True
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) #logo (b) #box (c) .star (d) p
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="star" id="top">Hello</h1> (a) h1 (b) .top (c) #star (d) .menu
6. 6.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) #red (b) #main (c) .main (d) #logo
7. 7.True or false: #end is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <li class="star" id="main">Hello</li> (a) .main (b) #logo (c) .star (d) .menu
9. 9.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
10. 10.True or false: .big is a class selector. (a) False (b) True
11. 11.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
13. 13.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #logo (b) .main (c) span (d) #note
14. 14.True or false: h1 is an id selector. (a) False (b) True
15. 15.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <h2> (d) <div id="top">
17. 17.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
18. 18.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) #note (c) #end (d) #logo
19. 19.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
20. 20.True or false: #top is an id selector. (a) True (b) False
21. 21.True or false: .note is an element selector. (a) False (b) True
22. 22.True or false: li is an element selector. (a) True (b) False
23. 23.True or false: .card is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) li (b) div (c) .intro (d) #main
25. 25.True or false: body is an element selector. (a) False (b) True
26. 26.True or false: .menu is an element selector. (a) False (b) True
27. 27.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 id="hero"> (c) <h2 class="box"> (d) <h1 class="hero">
29. 29.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .note (b) #logo (c) .menu (d) .main
31. 31.🎯 Which element does the selector #main style? (a) <div class="menu"> (b) <li id="logo"> (c) <li class="main"> (d) <li id="main">
32. 32.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div class="star"> (c) <div class="menu"> (d) <div id="star">
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) h1 (b) #star (c) h2 (d) .logo
34. 34.True or false: h1 is a class selector. (a) True (b) False
35. 35.True or false: .note is a class selector. (a) False (b) True
36. 36.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="red"> (d) <h2 id="logo">
37. 37.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <span class="box"> (c) <div id="intro"> (d) <div class="top">
39. 39.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="intro"> (c) <h1> (d) <h2 class="note">
40. 40.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector

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