CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 125 · 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.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
2. 2.True or false: .note is a class selector. (a) False (b) True
3. 3.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <li id="intro"> (d) <div class="big">
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.True or false: #logo is an element selector. (a) True (b) False
6. 6.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
7. 7.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <li> (c) <h2 class="red"> (d) <span id="hero">
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) li (b) h2 (c) #star (d) .logo
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) #red (b) .logo (c) .box (d) h1
11. 11.True or false: .card is an element selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .note (b) span (c) #note (d) #top
13. 13.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li id="star"> (c) <li class="star"> (d) <li class="menu">
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) .big (c) .intro (d) .note
15. 15.True or false: .card is a class selector. (a) True (b) False
16. 16.True or false: .note is an element selector. (a) True (b) False
17. 17.True or false: li is an element selector. (a) True (b) False
18. 18.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) h1 (b) .hero (c) #top (d) #note
20. 20.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) #end (c) #logo (d) #star
21. 21.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <li class="box"> (d) <h1 class="box">
22. 22.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
24. 24.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #main (b) #logo (c) h1 (d) #star
25. 25.True or false: #end is a class selector. (a) False (b) True
26. 26.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <span> (c) <h1 id="intro"> (d) <div class="menu">
27. 27.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="note"> (c) <li id="end"> (d) <li id="hero">
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .star (b) .main (c) .menu (d) #star
29. 29.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <p class="menu"> (c) <span id="logo"> (d) <span id="main">
30. 30.True or false: h1 is an id selector. (a) False (b) True
31. 31.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span class="red"> (c) <p class="star"> (d) <span id="red">
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #end (b) div (c) .red (d) .end
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h2 (b) .big (c) #note (d) .note
34. 34.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <h1 class="note"> (d) <li class="note">
35. 35.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) span (b) #big (c) .red (d) div
38. 38.True or false: .star is an id selector. (a) True (b) False
39. 39.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
40. 40.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector

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