CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 764 · 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 .star? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="red" id="hero">Hello</h2> (a) li (b) .hero (c) .box (d) .red
3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
4. 4.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 class="intro"> (c) <h1 id="main"> (d) <h2 class="box">
5. 5.True or false: #top is a class selector. (a) True (b) False
6. 6.True or false: .card is an element selector. (a) False (b) True
7. 7.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="top">Hello</div> (a) .top (b) #note (c) span (d) div
10. 10.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
11. 11.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="menu"> (c) <h2 id="intro"> (d) <span class="menu">
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) #logo (c) #main (d) .star
13. 13.True or false: .menu is an id selector. (a) True (b) False
14. 14.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <li class="star"> (c) <li id="box"> (d) <div class="menu">
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="note"> (c) <h2 class="big"> (d) <h1 class="menu">
18. 18.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) #note (c) .note (d) li
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .star (b) #main (c) .menu (d) .intro
21. 21.True or false: h1 is an element selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) h1 (b) #logo (c) .big (d) .note
23. 23.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
24. 24.True or false: .card is a class selector. (a) True (b) False
25. 25.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .red (b) #hero (c) #big (d) p
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) #end (b) h2 (c) .star (d) .box
28. 28.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <span class="note"> (c) <p class="big"> (d) <span id="menu">
29. 29.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
30. 30.True or false: body is a class selector. (a) True (b) False
31. 31.True or false: li is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) div (b) .box (c) .intro (d) li
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) .note (b) .end (c) .menu (d) h2
34. 34.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) #main (c) .note (d) #note
35. 35.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <h2 id="logo"> (c) <h2 class="logo"> (d) <li class="red">
36. 36.True or false: #top is an id selector. (a) True (b) False
37. 37.True or false: #logo is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) #box (b) .hero (c) h2 (d) #top
39. 39.🎯 Which element does the selector #top style? (a) <div class="menu"> (b) <li id="top"> (c) <li class="top"> (d) <li id="intro">
40. 40.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector

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