CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 863 · 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 CSS selector matches this element?
   <p class="box" id="top">Hello</p> (a) #box (b) h1 (c) .box (d) #intro
2. 2.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li class="big"> (c) <li id="note"> (d) <div class="red">
3. 3.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="menu"> (d) <p class="note">
4. 4.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
5. 5.True or false: .card is an id selector. (a) False (b) True
6. 6.True or false: .note is an id selector. (a) True (b) False
7. 7.True or false: .big is an element selector. (a) False (b) True
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="box" id="top">Hello</h1> (a) h1 (b) .top (c) .star (d) h2
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .intro (b) #intro (c) h2 (d) #note
10. 10.🎯 Which element does the selector #main style? (a) <span class="menu"> (b) <div id="main"> (c) <div id="logo"> (d) <div class="main">
11. 11.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) .red (c) #logo (d) #big
12. 12.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
14. 14.True or false: body is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .note (b) .main (c) h2 (d) #note
16. 16.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <p class="note"> (c) <span id="main"> (d) <span id="logo">
17. 17.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #end (b) #hero (c) #box (d) .star
18. 18.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: #end is a class selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) h1 (c) .red (d) h2
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) #star (b) li (c) .menu (d) #logo
23. 23.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) p (b) h1 (c) #note (d) .main
24. 24.🎯 Can many elements share the same class? (a) No (b) Yes
25. 25.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
26. 26.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <h2> (c) <div id="top"> (d) <li class="big">
27. 27.True or false: img is an element selector. (a) True (b) False
28. 28.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h2 id="intro"> (c) <p> (d) <h1 class="box">
29. 29.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <h1 class="box"> (c) <p class="big"> (d) <p id="big">
30. 30.True or false: .note is a class selector. (a) True (b) False
31. 31.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
33. 33.True or false: .big is a class selector. (a) True (b) False
34. 34.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) #main (c) h2 (d) #note
36. 36.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div id="star"> (c) <span class="note"> (d) <div class="star">
37. 37.🎯 Which element does the selector li style? (a) <span class="box"> (b) <p id="top"> (c) <div> (d) <li class="box">
38. 38.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) li (c) h2 (d) #note
40. 40.True or false: #main is an element selector. (a) False (b) True

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