CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 718 · 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="intro">Hello</li> (a) #main (b) #menu (c) li (d) .note
2. 2.True or false: .big is a class selector. (a) False (b) True
3. 3.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
4. 4.True or false: li is an element selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) .red (b) h1 (c) h2 (d) #big
6. 6.True or false: .note is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="hero">Hello</h2> (a) #top (b) #hero (c) li (d) #menu
8. 8.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 id="top"> (c) <h2 class="star"> (d) <h1 class="hero">
9. 9.🎯 Which CSS selector matches this element?
   <p class="menu" id="end">Hello</p> (a) #end (b) h1 (c) #menu (d) .end
10. 10.True or false: li is an id selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
12. 12.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <h2 id="hero"> (c) <h2 class="end"> (d) <li class="star">
13. 13.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .menu (b) .hero (c) #star (d) .star
15. 15.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
16. 16.True or false: h1 is an element selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #main (b) li (c) .star (d) .menu
18. 18.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="intro"> (c) <div class="star"> (d) <h2 class="star">
19. 19.True or false: #top is an id selector. (a) True (b) False
20. 20.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h1> (c) <li id="main"> (d) <h2 class="star">
21. 21.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
22. 22.True or false: .star is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .box (b) h2 (c) .logo (d) #box
24. 24.True or false: li is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="star"> (d) <li class="star">
26. 26.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 Can many elements share the same class? (a) No (b) Yes
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #top (b) .big (c) #intro (d) h2
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #end (b) .end (c) #red (d) .box
30. 30.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="red"> (d) <p class="box">
31. 31.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="logo"> (c) <h2 id="main"> (d) <li class="box">
32. 32.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
33. 33.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 id="box"> (c) <h2 class="star"> (d) <h2 class="box">
34. 34.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
35. 35.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
37. 37.🎯 Which element does the selector #logo style? (a) <p class="star"> (b) <span id="logo"> (c) <span class="logo"> (d) <span id="end">
38. 38.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .red (b) .top (c) #top (d) #intro
39. 39.True or false: #hero is an id selector. (a) True (b) False
40. 40.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <div class="menu"> (c) <span> (d) <p class="menu">

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