CSS Worksheet: Selectors Class and Id

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

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