CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 101 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) p (b) .hero (c) #big (d) .big
3. 3.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) .main (b) #logo (c) span (d) .box
4. 4.True or false: .card is an element selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) #red (b) .box (c) .end (d) .red
6. 6.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
9. 9.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector #top style? (a) <p class="menu"> (b) <span id="top"> (c) <span id="intro"> (d) <span class="top">
12. 12.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) .red (c) .top (d) .box
13. 13.True or false: #hero is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <h1 class="red"> (d) <p class="intro">
15. 15.True or false: p is an id selector. (a) False (b) True
16. 16.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 class="box"> (c) <h2 class="star"> (d) <h1 id="red">
19. 19.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .menu (b) #logo (c) .logo (d) #star
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) h1 (c) .star (d) #box
22. 22.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #note (b) .big (c) .logo (d) h2
24. 24.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector #hero style? (a) <span class="red"> (b) <div id="top"> (c) <div id="hero"> (d) <div class="hero">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #top (b) #star (c) #intro (d) .top
27. 27.True or false: #logo is an id selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) .intro (c) #main (d) #intro
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) .star (b) .menu (c) .hero (d) p
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) #top (c) #big (d) #intro
31. 31.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
32. 32.True or false: .star is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) p (b) #end (c) #logo (d) .logo
34. 34.True or false: li is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #intro (b) .big (c) #note (d) li
36. 36.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .box (b) #logo (c) .red (d) #red
37. 37.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="main"> (c) <h1 id="logo"> (d) <h2 class="big">
38. 38.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p id="menu"> (c) <h1 class="big"> (d) <p class="menu">
40. 40.True or false: #end is an id selector. (a) True (b) False

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