CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 15 · 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.True or false: li is a class selector. (a) True (b) False
2. 2.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="logo"> (c) <li id="main"> (d) <li class="main">
3. 3.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) #red (b) .top (c) h1 (d) .red
4. 4.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <h1 class="note"> (d) <p id="main">
7. 7.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
8. 8.🎯 Which CSS selector matches this element?
   <span class="star" id="top">Hello</span> (a) p (b) .star (c) .top (d) #star
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="logo">Hello</h2> (a) li (b) #end (c) .note (d) #note
10. 10.True or false: .menu is a class selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #big (b) #main (c) #intro (d) p
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #main (b) h2 (c) #menu (d) h1
13. 13.🎯 Which element does the selector p style? (a) <h1> (b) <li id="logo"> (c) <p class="star"> (d) <h2 class="star">
14. 14.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
15. 15.True or false: .menu is an element selector. (a) False (b) True
16. 16.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <h2 id="menu"> (c) <li class="big"> (d) <h2 class="note">
18. 18.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #top (b) .hero (c) #hero (d) p
19. 19.True or false: .big is a class selector. (a) False (b) True
20. 20.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span id="box"> (c) <span class="star"> (d) <span class="box">
21. 21.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <span id="menu"> (c) <span class="menu"> (d) <p class="big">
23. 23.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) div (b) #menu (c) .logo (d) #logo
25. 25.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) li (b) .hero (c) .red (d) .box
28. 28.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
29. 29.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #top (b) #menu (c) .menu (d) span
30. 30.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="red"> (c) <li class="big"> (d) <li id="big">
31. 31.True or false: .big is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) .hero (b) #big (c) li (d) #hero
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .top (b) #intro (c) div (d) .menu
34. 34.True or false: .note is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <div class="star"> (c) <span class="menu"> (d) <div id="box">
36. 36.True or false: #hero is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) .menu (c) #menu (d) #intro
38. 38.True or false: .card is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <h2 class="hero"> (c) <li class="note"> (d) <h2 id="top">
40. 40.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @

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