CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 878 · 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 CSS selector matches this element?
   <h1 class="box" id="main">Hello</h1> (a) .star (b) #box (c) h1 (d) .main
2. 2.🎯 Which element does the selector div style? (a) <div class="big"> (b) <span> (c) <p class="big"> (d) <h1 id="top">
3. 3.True or false: .big is an element selector. (a) True (b) False
4. 4.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) h2 (b) #main (c) #star (d) #logo
7. 7.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
9. 9.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) div (b) .note (c) #intro (d) .menu
10. 10.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 id="box"> (c) <h1 class="box"> (d) <h1 class="star">
11. 11.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="star"> (c) <p class="box"> (d) <p id="box">
12. 12.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .box (b) #top (c) #hero (d) h1
13. 13.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.True or false: .note is an element selector. (a) False (b) True
16. 16.True or false: img is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) .main (b) .red (c) #big (d) span
18. 18.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #logo (b) #big (c) span (d) .big
19. 19.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="star"> (c) <li class="menu"> (d) <div class="note">
20. 20.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) #big (c) span (d) #end
21. 21.True or false: #end is a class selector. (a) True (b) False
22. 22.True or false: .card is a class selector. (a) True (b) False
23. 23.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <div class="red"> (c) <li class="main"> (d) <li id="logo">
24. 24.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="red">
25. 25.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) h1 (c) #intro (d) p
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .note (b) .menu (c) .intro (d) h2
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #main (b) .intro (c) .menu (d) .star
28. 28.True or false: .star is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 id="big"> (c) <h2 class="big"> (d) <li class="box">
30. 30.True or false: img is an element selector. (a) True (b) False
31. 31.True or false: .star is a class selector. (a) False (b) True
32. 32.True or false: #hero is a class selector. (a) True (b) False
33. 33.True or false: p is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h1 class="note"> (c) <h2 id="main"> (d) <p>
35. 35.🎯 Which element does the selector .menu style? (a) <span class="big"> (b) <div class="note"> (c) <div class="menu"> (d) <div id="menu">
36. 36.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <div class="star"> (c) <p class="star"> (d) <span>
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) li (b) .note (c) #main (d) #note
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .big (b) #end (c) .end (d) li
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .main (b) #note (c) h1 (d) h2
40. 40.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector

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