CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 56 · 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 .box style? (a) <p class="menu"> (b) <span id="box"> (c) <span class="box"> (d) <span class="star">
2. 2.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <h2 id="end"> (c) <p> (d) <span class="box">
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 Which CSS selector matches this element?
   <li class="note" id="hero">Hello</li> (a) #note (b) #top (c) .hero (d) li
5. 5.🎯 Which CSS selector matches this element?
   <div class="red" id="hero">Hello</div> (a) .red (b) span (c) .box (d) .hero
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="intro">Hello</h1> (a) #menu (b) h1 (c) h2 (d) .note
7. 7.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
8. 8.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
9. 9.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
10. 10.True or false: #hero is an id selector. (a) True (b) False
11. 11.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .main (b) #main (c) #logo (d) p
13. 13.True or false: .star is an id selector. (a) False (b) True
14. 14.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="note"> (d) <p class="menu">
15. 15.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 class="big"> (c) <h1 id="big"> (d) <h2 class="box">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .note (b) .main (c) .menu (d) #menu
17. 17.True or false: img is an element selector. (a) True (b) False
18. 18.True or false: #top is an id selector. (a) False (b) True
19. 19.True or false: body is a class selector. (a) False (b) True
20. 20.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <h2> (c) <li class="star"> (d) <div id="top">
21. 21.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <p class="menu"> (d) <h1 id="end">
22. 22.True or false: #logo is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .top (b) #intro (c) .note (d) .big
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) #intro (c) #main (d) .intro
25. 25.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li id="box"> (c) <li class="box"> (d) <li class="star">
26. 26.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .star (b) #main (c) .menu (d) #star
27. 27.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="note"> (c) <div class="big"> (d) <span class="red">
28. 28.True or false: li is a class selector. (a) True (b) False
29. 29.True or false: #main is an id selector. (a) True (b) False
30. 30.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <h2 class="box"> (c) <li> (d) <div class="box">
31. 31.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .top (b) h2 (c) .red (d) #intro
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .logo (b) .menu (c) h2 (d) #star
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) .big (b) .main (c) #main (d) #note
35. 35.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) div (b) .note (c) .intro (d) li
36. 36.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <p class="star"> (c) <span id="intro"> (d) <span class="intro">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #top (b) #box (c) .top (d) .star
38. 38.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .red (b) #intro (c) p (d) #big
39. 39.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector

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