CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 462 · 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.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: .card is an id selector. (a) True (b) False
3. 3.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <span class="box"> (d) <li class="box">
5. 5.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
6. 6.True or false: h1 is a class selector. (a) True (b) False
7. 7.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
8. 8.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
10. 10.True or false: .menu is an element selector. (a) False (b) True
11. 11.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="note"> (c) <p class="big"> (d) <p id="note">
12. 12.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 Which element does the selector p style? (a) <li id="main"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
14. 14.True or false: h1 is an element selector. (a) False (b) True
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) li (b) .top (c) #red (d) h2
17. 17.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
19. 19.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <div class="main"> (c) <span class="box"> (d) <div id="main">
20. 20.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .main (b) span (c) #menu (d) .note
21. 21.True or false: .note is a class selector. (a) True (b) False
22. 22.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <p id="top"> (d) <li class="menu">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .hero (b) h2 (c) #hero (d) #note
25. 25.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <h1 class="note"> (c) <p class="main"> (d) <p id="main">
26. 26.True or false: .menu is a class selector. (a) True (b) False
27. 27.True or false: .star is an id selector. (a) True (b) False
28. 28.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 id="big"> (c) <h2 class="red"> (d) <h2 class="big">
30. 30.🎯 Which element does the selector #main style? (a) <div class="menu"> (b) <li class="main"> (c) <li id="main"> (d) <li id="logo">
31. 31.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <li class="star"> (d) <h2 id="intro">
32. 32.🎯 Which element does the selector #end style? (a) <div id="end"> (b) <span class="red"> (c) <div class="end"> (d) <div id="hero">
33. 33.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) div (b) #note (c) #end (d) .note
34. 34.🎯 Which element does the selector div style? (a) <div class="note"> (b) <h1 id="top"> (c) <p class="note"> (d) <span>
35. 35.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
36. 36.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) #top (c) .top (d) span
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #box (b) #intro (c) h2 (d) .intro
38. 38.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <h2 id="menu"> (c) <h2 class="note"> (d) <li class="big">
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .logo (b) .red (c) .box (d) div
40. 40.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #top (b) .menu (c) .hero (d) .note

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