CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 716 · 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 sign starts an id selector? (a) @ (b) # (c) . (d) &
2. 2.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
3. 3.🎯 Which CSS selector matches this element?
   <div class="menu" id="logo">Hello</div> (a) #logo (b) .note (c) #end (d) #menu
4. 4.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="note">
5. 5.🎯 Which CSS selector matches this element?
   <div class="big" id="hero">Hello</div> (a) .red (b) span (c) #hero (d) #big
6. 6.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <h2 id="logo"> (d) <li class="red">
7. 7.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <p> (c) <h1 class="menu"> (d) <span class="menu">
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) .note (b) .intro (c) #main (d) .big
9. 9.True or false: .card is a class selector. (a) True (b) False
10. 10.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="big"> (c) <p class="red"> (d) <h1 class="box">
11. 11.True or false: #logo is an element selector. (a) False (b) True
12. 12.True or false: .big is an id selector. (a) False (b) True
13. 13.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
14. 14.True or false: h1 is an element selector. (a) False (b) True
15. 15.True or false: .star is an element selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .top (b) .note (c) #note (d) .big
17. 17.True or false: body is an element selector. (a) True (b) False
18. 18.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <p id="intro"> (d) <h1 class="red">
20. 20.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="box">
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) h2 (b) #star (c) .menu (d) #main
22. 22.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which element does the selector li style? (a) <div> (b) <li class="menu"> (c) <p id="logo"> (d) <span class="menu">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .star (b) #end (c) h2 (d) .box
25. 25.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) .intro (c) .red (d) h1
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) h1 (c) #main (d) #menu
27. 27.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="note"> (c) <li id="end"> (d) <li id="hero">
28. 28.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="box"> (c) <li class="box"> (d) <div id="end">
29. 29.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <li class="box"> (c) <h2 class="red"> (d) <h2 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) .top (b) .note (c) #menu (d) #top
31. 31.🎯 Can many elements share the same class? (a) No (b) Yes
32. 32.🎯 Which element does the selector #top style? (a) <h1 class="red"> (b) <p id="top"> (c) <p id="intro"> (d) <p class="top">
33. 33.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <div class="star"> (d) <h2 class="star">
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .note (b) li (c) div (d) #menu
35. 35.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="big">
39. 39.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="main"> (c) <div> (d) <li class="star">

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