CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 104 · 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.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
2. 2.True or false: .card is an id selector. (a) False (b) True
3. 3.True or false: #end is an id selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <li class="big" id="end">Hello</li> (a) .red (b) #big (c) .end (d) li
5. 5.True or false: .big is an id selector. (a) False (b) True
6. 6.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
7. 7.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) p (b) .hero (c) #top (d) #hero
8. 8.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <h1 class="big"> (c) <p id="menu"> (d) <p class="menu">
10. 10.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p id="intro"> (c) <p id="top"> (d) <p class="top">
11. 11.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) li (b) #red (c) .top (d) #intro
12. 12.True or false: .star is an id selector. (a) False (b) True
13. 13.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
14. 14.True or false: #hero is an id selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) span (c) .red (d) .end
16. 16.True or false: #hero is an element selector. (a) True (b) False
17. 17.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 class="logo"> (c) <h2 class="menu"> (d) <h1 id="end">
18. 18.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) .box (b) h2 (c) h1 (d) .main
20. 20.🎯 Can many elements share the same class? (a) Yes (b) No
21. 21.True or false: #logo is an id selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) #big (b) .big (c) span (d) #hero
23. 23.True or false: li is an element selector. (a) True (b) False
24. 24.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
25. 25.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <li class="star"> (c) <div class="menu"> (d) <li id="box">
26. 26.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) .end (b) #hero (c) h1 (d) .menu
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) h2 (b) .note (c) .big (d) .hero
29. 29.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #big (b) .main (c) #logo (d) span
30. 30.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <div id="note"> (c) <div class="big"> (d) <span class="red">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .menu (b) .note (c) li (d) #menu
33. 33.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #red (b) #hero (c) .red (d) .box
34. 34.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="note"> (c) <div class="red"> (d) <li class="big">
35. 35.True or false: h1 is a class selector. (a) True (b) False
36. 36.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 id="big"> (c) <h2 class="red"> (d) <li class="box">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) h2 (b) #note (c) #logo (d) li
38. 38.True or false: .note is an element selector. (a) True (b) False
39. 39.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <li class="menu"> (c) <h2 class="end"> (d) <h2 id="end">
40. 40.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector

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