CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 953 · 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: #main is a class selector. (a) True (b) False
2. 2.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
3. 3.🎯 Which CSS selector matches this element?
   <p class="menu" id="hero">Hello</p> (a) .note (b) #menu (c) .menu (d) h1
4. 4.🎯 Which CSS selector matches this element?
   <span class="red" id="logo">Hello</span> (a) p (b) #logo (c) #end (d) .box
5. 5.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
8. 8.True or false: .menu is a class selector. (a) False (b) True
9. 9.True or false: p is an element selector. (a) True (b) False
10. 10.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 Can many elements share the same class? (a) Yes (b) No
12. 12.True or false: li is an id selector. (a) False (b) True
13. 13.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
14. 14.True or false: p is an id selector. (a) True (b) False
15. 15.True or false: #end is an element selector. (a) False (b) True
16. 16.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h2 class="box"> (c) <h1 id="big"> (d) <h1 class="big">
17. 17.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) .box (c) #end (d) #hero
18. 18.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .top (b) #star (c) div (d) span
19. 19.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which element does the selector div style? (a) <p class="box"> (b) <span> (c) <h1 id="main"> (d) <div class="box">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .intro (b) .big (c) .note (d) #note
22. 22.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) #note (b) h1 (c) .hero (d) .note
23. 23.True or false: .star is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="intro"> (c) <li id="main"> (d) <div class="red">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .top (b) #red (c) h2 (d) li
27. 27.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p class="logo"> (c) <h1 class="box"> (d) <p id="logo">
28. 28.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <p> (c) <h2 id="hero"> (d) <span class="red">
29. 29.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <h2 class="star"> (c) <li> (d) <div class="star">
30. 30.True or false: body is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector #main style? (a) <div class="box"> (b) <li id="logo"> (c) <li id="main"> (d) <li class="main">
32. 32.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .star (b) .logo (c) .menu (d) #star
33. 33.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="red"> (c) <h1 class="red"> (d) <h2>
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) h1 (c) p (d) .star
35. 35.True or false: .big is a class selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #hero (b) .hero (c) #menu (d) span
37. 37.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="end"> (c) <li> (d) <h2 class="note">
38. 38.True or false: body is a class selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) #top (c) #red (d) .top
40. 40.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .main (b) #star (c) span (d) .menu

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