CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 252 · 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 p style? (a) <li id="top"> (b) <h1> (c) <p class="box"> (d) <h2 class="box">
2. 2.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
3. 3.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
4. 4.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="red" id="top">Hello</h1> (a) .top (b) h2 (c) #red (d) .red
6. 6.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <h1 class="note"> (d) <li class="note">
7. 7.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) #red (b) #logo (c) .main (d) li
8. 8.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
9. 9.True or false: #logo is an id selector. (a) True (b) False
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h1 class="big"> (c) <h2> (d) <div id="logo">
12. 12.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) #main (b) #intro (c) #red (d) .box
14. 14.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) #menu (b) #intro (c) .note (d) .intro
15. 15.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <p id="hero"> (c) <p class="hero"> (d) <h1 class="note">
16. 16.True or false: #hero is a class selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) .note (b) .menu (c) #main (d) p
18. 18.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
19. 19.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) span (b) #logo (c) #note (d) .note
21. 21.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
24. 24.True or false: p is a class selector. (a) False (b) True
25. 25.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <p class="red"> (d) <h2 class="red">
27. 27.True or false: .note is an id selector. (a) True (b) False
28. 28.True or false: p is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) #intro (c) .red (d) h1
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #top (b) h2 (c) #box (d) .box
31. 31.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="menu"> (c) <p class="menu"> (d) <li id="end">
32. 32.True or false: h1 is an id selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) h2 (b) #note (c) h1 (d) .main
34. 34.True or false: .star is an id selector. (a) True (b) False
35. 35.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .star (b) h1 (c) #logo (d) .main
37. 37.True or false: .note is a class selector. (a) True (b) False
38. 38.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <p class="note"> (d) <span class="intro">
39. 39.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) span (b) #logo (c) #menu (d) div
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .menu (b) h1 (c) .top (d) #star

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