CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 748 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
2. 2.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h2> (c) <h1 class="menu"> (d) <li class="menu">
3. 3.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) span (b) #note (c) .intro (d) p
4. 4.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
5. 5.True or false: h1 is an element selector. (a) False (b) True
6. 6.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <li> (d) <span id="end">
7. 7.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) .intro (b) #intro (c) #note (d) #main
10. 10.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <h1 class="star"> (c) <p class="red"> (d) <p id="red">
11. 11.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="note"> (c) <h2 id="intro"> (d) <h2 id="main">
12. 12.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
13. 13.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) #note (c) #top (d) span
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li id="logo"> (c) <div class="box"> (d) <li class="main">
18. 18.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
19. 19.True or false: .card is a class selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) h2 (b) #top (c) h1 (d) #menu
21. 21.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .note (b) li (c) #intro (d) div
22. 22.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <span class="note"> (c) <div id="end"> (d) <div id="hero">
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) h2 (b) li (c) #top (d) .hero
24. 24.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #top (b) .big (c) #note (d) #hero
26. 26.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="end"> (c) <p id="hero"> (d) <h1 class="menu">
27. 27.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .star (b) .main (c) p (d) #box
28. 28.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) .main (b) #note (c) #logo (d) li
29. 29.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) #box (b) .hero (c) p (d) .box
30. 30.True or false: .menu is a class selector. (a) True (b) False
31. 31.True or false: .big is a class selector. (a) True (b) False
32. 32.True or false: .star is a class selector. (a) True (b) False
33. 33.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <p class="hero"> (c) <p id="hero"> (d) <h1 class="note">
37. 37.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="red"> (c) <li id="top"> (d) <li id="intro">
38. 38.True or false: body is an element selector. (a) False (b) True
39. 39.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="big">
40. 40.🎯 Which element does the selector p style? (a) <li id="main"> (b) <p class="note"> (c) <h1> (d) <h2 class="note">

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