CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 339 · 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: .note is a class selector. (a) False (b) True
2. 2.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) h2 (b) #main (c) #note (d) h1
4. 4.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p class="big">
5. 5.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) #hero (b) .big (c) #note (d) #end
8. 8.🎯 Which CSS selector matches this element?
   <li class="star" id="main">Hello</li> (a) #main (b) #star (c) #logo (d) .main
9. 9.🎯 Which CSS selector matches this element?
   <li class="box" id="main">Hello</li> (a) div (b) .main (c) .box (d) #box
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .red (b) .box (c) #red (d) #intro
11. 11.True or false: .menu is an id selector. (a) False (b) True
12. 12.True or false: #top is an id selector. (a) True (b) False
13. 13.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <div class="star"> (c) <li> (d) <span id="logo">
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
17. 17.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <div class="note"> (c) <li id="star"> (d) <li class="menu">
18. 18.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) .star (b) li (c) #intro (d) .top
19. 19.True or false: #logo is a class selector. (a) True (b) False
20. 20.True or false: .note is an id selector. (a) True (b) False
21. 21.True or false: .big is an id selector. (a) True (b) False
22. 22.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
23. 23.True or false: .card is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) span (b) .top (c) div (d) #big
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="hero"> (c) <h2 id="end"> (d) <li class="box">
27. 27.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 id="big"> (c) <li class="box"> (d) <h2 class="big">
28. 28.🎯 Which element does the selector #top style? (a) <div class="big"> (b) <li id="intro"> (c) <li class="top"> (d) <li id="top">
29. 29.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) h1 (b) .menu (c) p (d) #top
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #star (b) h2 (c) #hero (d) .star
31. 31.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h2 class="red"> (c) <h1 class="big"> (d) <h1 class="note">
32. 32.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) #intro (c) #main (d) .box
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) #intro (b) .red (c) .box (d) li
34. 34.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .red (b) #red (c) .top (d) h1
35. 35.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h1 class="menu"> (c) <p> (d) <h2 id="end">
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .hero (b) span (c) #menu (d) #hero
37. 37.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="note"> (c) <p> (d) <span class="note">
38. 38.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .box (b) #intro (c) .star (d) h1
39. 39.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
40. 40.True or false: #logo is an id selector. (a) True (b) False

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