CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 130 · 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 h1? (a) a class selector (b) an element selector (c) an id selector
2. 2.True or false: .big is an id selector. (a) False (b) True
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <p class="box" id="top">Hello</p> (a) p (b) h1 (c) #box (d) .top
7. 7.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
8. 8.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="main"> (c) <h1 class="red"> (d) <h2>
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) h1 (b) #note (c) p (d) .top
10. 10.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h2> (c) <h1 class="note"> (d) <li class="note">
11. 11.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) #intro (c) #note (d) #main
12. 12.True or false: .card is an element selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #end (b) #box (c) .box (d) .logo
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) #main (b) .note (c) .intro (d) #note
15. 15.True or false: p is a class selector. (a) True (b) False
16. 16.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
17. 17.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .star (b) #box (c) div (d) #top
18. 18.🎯 Which element does the selector #logo style? (a) <h1 class="box"> (b) <p class="logo"> (c) <p id="logo"> (d) <p id="end">
19. 19.True or false: .card is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
21. 21.True or false: .card is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
23. 23.True or false: .star is an id selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) p (b) #intro (c) #red (d) h1
25. 25.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
26. 26.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) .main (b) .note (c) #logo (d) .big
27. 27.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h2 id="end"> (c) <p> (d) <h1 class="star">
28. 28.🎯 Which element does the selector span style? (a) <h1 class="note"> (b) <p> (c) <h2 id="intro"> (d) <span class="note">
29. 29.True or false: li is an element selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #hero (b) .red (c) .end (d) #red
31. 31.True or false: #top is a class selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #hero (b) #big (c) h1 (d) p
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .top (b) #top (c) #intro (d) .star
34. 34.🎯 Which element does the selector li style? (a) <span class="star"> (b) <div> (c) <p id="end"> (d) <li class="star">
35. 35.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) #star (b) .logo (c) .menu (d) .star
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) .logo (c) #note (d) p
38. 38.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="red"> (c) <li id="big"> (d) <li class="big">
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #red (b) .red (c) .box (d) .end
40. 40.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) div (b) #logo (c) span (d) #box

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