CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 577 · 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.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="big"> (c) <div class="red"> (d) <span class="box">
2. 2.True or false: .note is an element selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="star" id="top">Hello</h2> (a) #intro (b) .menu (c) h2 (d) #star
4. 4.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
6. 6.🎯 Which element does the selector #hero style? (a) <span class="menu"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
7. 7.True or false: li is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="logo">Hello</h1> (a) .logo (b) #note (c) .big (d) .note
9. 9.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
10. 10.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <li id="hero"> (c) <div class="big"> (d) <li id="end">
11. 11.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .note (b) .hero (c) div (d) span
12. 12.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .box (b) .intro (c) #main (d) #box
13. 13.True or false: .card is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) #menu (b) .menu (c) div (d) .logo
15. 15.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #logo (b) p (c) .main (d) span
16. 16.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #main (b) #note (c) #intro (d) .intro
17. 17.True or false: .card is an element selector. (a) True (b) False
18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #big (b) #logo (c) .logo (d) .red
20. 20.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) .end (b) #hero (c) .note (d) li
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #big (b) h2 (c) .intro (d) #main
22. 22.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p id="top"> (c) <p id="intro"> (d) <p class="top">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) .main (b) #red (c) .box (d) h1
24. 24.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <h2 id="note">
25. 25.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) div (b) #big (c) li (d) .red
29. 29.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #logo (b) .logo (c) p (d) #box
30. 30.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) p (b) #box (c) .star (d) #top
32. 32.True or false: #top is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #hero (b) #top (c) h2 (d) #menu
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) h2 (b) #top (c) .big (d) li
35. 35.True or false: #logo is an id selector. (a) True (b) False
36. 36.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
37. 37.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li id="box"> (c) <li class="star"> (d) <li class="box">
39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) p (b) .menu (c) .star (d) #logo
40. 40.True or false: li is a class selector. (a) True (b) False

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