CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 267 · 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.True or false: #hero is an id selector. (a) True (b) False
2. 2.True or false: .menu is an element selector. (a) False (b) True
3. 3.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
4. 4.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="star"> (d) <span class="star">
5. 5.🎯 Which CSS selector matches this element?
   <span class="box" id="top">Hello</span> (a) #box (b) .top (c) .star (d) span
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
7. 7.True or false: #main is a class selector. (a) False (b) True
8. 8.True or false: .card is a class selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <p class="menu" id="main">Hello</p> (a) .note (b) #menu (c) .main (d) p
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) h2 (c) .big (d) li
11. 11.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h1 class="red">
12. 12.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: .big is an id selector. (a) True (b) False
14. 14.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) .hero (c) .note (d) #top
17. 17.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
18. 18.True or false: li is an element selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) li (b) #hero (c) .hero (d) #red
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) h2 (b) #main (c) #note (d) #logo
21. 21.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <div class="red"> (d) <span class="star">
22. 22.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .red (b) .big (c) .end (d) p
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .box (b) .star (c) .top (d) #intro
24. 24.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span class="red"> (c) <p class="box"> (d) <span id="big">
26. 26.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="box"> (c) <span class="box"> (d) <h2 id="intro">
27. 27.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
29. 29.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <h2 class="star"> (c) <div class="star"> (d) <li>
30. 30.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <p class="red"> (c) <span class="big"> (d) <span class="note">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) h2 (b) .logo (c) .menu (d) #menu
32. 32.True or false: .card is an id selector. (a) True (b) False
33. 33.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) div (b) .logo (c) .star (d) #box
35. 35.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) .hero (b) .big (c) #note (d) .note
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) .red (b) #big (c) .big (d) #logo
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) h1 (b) #end (c) .logo (d) .big
38. 38.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) .intro (c) .menu (d) #menu
40. 40.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <span class="menu"> (c) <p class="note"> (d) <span class="star">

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