CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 605 · 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 element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
3. 3.True or false: #logo is an id selector. (a) True (b) False
4. 4.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="end"> (c) <h2> (d) <li class="note">
6. 6.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="main"> (c) <span class="note"> (d) <h1 class="note">
8. 8.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <h2> (c) <h1 class="menu"> (d) <div id="top">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .big (b) .intro (c) h1 (d) #main
10. 10.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="red"> (c) <span class="box"> (d) <p class="star">
11. 11.True or false: #top is a class selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) .box (b) #red (c) #logo (d) #end
13. 13.True or false: li is a class selector. (a) False (b) True
14. 14.True or false: #main is a class selector. (a) True (b) False
15. 15.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <div class="big"> (c) <li> (d) <h2 class="big">
16. 16.🎯 Which element does the selector span style? (a) <span class="red"> (b) <p> (c) <h1 class="red"> (d) <h2 id="logo">
17. 17.🎯 Can many elements share the same class? (a) Yes (b) No
18. 18.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
19. 19.True or false: body is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) li (c) #note (d) .end
22. 22.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) #end (b) div (c) .red (d) #red
23. 23.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
24. 24.True or false: #hero is a class selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) .menu (b) .intro (c) #main (d) .star
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) .menu (c) #menu (d) #main
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) h2 (b) .main (c) .red (d) #big
28. 28.True or false: li is an id selector. (a) False (b) True
29. 29.True or false: .big is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <div class="note"> (c) <li id="star"> (d) <li class="star">
31. 31.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
32. 32.True or false: #hero is an id selector. (a) True (b) False
33. 33.True or false: .big is an element selector. (a) True (b) False
34. 34.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .red (b) li (c) #red (d) #logo
36. 36.True or false: .card is a class selector. (a) False (b) True
37. 37.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .intro (b) .menu (c) #main (d) #intro
39. 39.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which element does the selector li style? (a) <span class="note"> (b) <div> (c) <li class="note"> (d) <p id="top">

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