CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 285 · 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 .card? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
3. 3.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="logo">Hello</p> (a) #logo (b) .logo (c) .menu (d) #star
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="box" id="main">Hello</h2> (a) .star (b) li (c) #box (d) h2
8. 8.True or false: #main is an id selector. (a) False (b) True
9. 9.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .top (b) #note (c) h2 (d) h1
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) p (b) #top (c) #hero (d) #big
12. 12.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <li id="star"> (c) <div class="note"> (d) <li class="menu">
13. 13.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="big"> (c) <p class="red"> (d) <h1 class="box">
14. 14.True or false: .star is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .star (c) .top (d) p
16. 16.🎯 Which element does the selector span style? (a) <p> (b) <span class="red"> (c) <h1 class="red"> (d) <h2 id="hero">
17. 17.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) #hero (b) p (c) #red (d) #top
18. 18.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) li (c) #main (d) .note
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .top (b) .star (c) #top (d) h2
23. 23.True or false: #logo is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .intro (b) #box (c) #intro (d) #main
25. 25.🎯 Which element does the selector p style? (a) <h1> (b) <p class="big"> (c) <li id="logo"> (d) <h2 class="big">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .top (b) .note (c) #note (d) #intro
27. 27.True or false: img is an id selector. (a) False (b) True
28. 28.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: .card is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) #red (c) #intro (d) .red
31. 31.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
32. 32.True or false: li is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) .top (c) #star (d) .star
34. 34.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) div (b) li (c) #red (d) #main
35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) #big (c) #top (d) p
36. 36.True or false: #logo is an id selector. (a) False (b) True
37. 37.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
38. 38.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="red"> (c) <li id="top"> (d) <li id="intro">
39. 39.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="red"> (c) <span id="big"> (d) <span class="big">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) #note (b) .note (c) .end (d) h2

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