CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 235 · 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: img is a class selector. (a) False (b) True
2. 2.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <p class="red"> (c) <span id="main"> (d) <span id="logo">
4. 4.🎯 Which element does the selector .box style? (a) <span class="box"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="star">
5. 5.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <p id="logo"> (d) <li class="red">
6. 6.True or false: li is an element selector. (a) False (b) True
7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
8. 8.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div id="star"> (c) <div class="menu"> (d) <div class="star">
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) #logo (b) h2 (c) #big (d) .main
10. 10.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) p (b) .red (c) #red (d) .box
12. 12.True or false: .menu is an id selector. (a) True (b) False
13. 13.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <div class="star"> (d) <li id="intro">
14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) p (b) span (c) .hero (d) #menu
15. 15.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
16. 16.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) h1 (c) #hero (d) .note
17. 17.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="logo"> (c) <span> (d) <div class="note">
18. 18.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) .red (b) #big (c) div (d) .big
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #note (b) .big (c) li (d) .note
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #menu (b) #top (c) .top (d) .note
21. 21.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="big"> (d) <h2 class="big">
22. 22.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .main (b) #main (c) #big (d) .red
23. 23.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .star (b) li (c) #logo (d) #end
25. 25.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
27. 27.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <span id="top"> (d) <h2 class="red">
29. 29.True or false: #logo is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) h1 (b) #hero (c) .end (d) #end
31. 31.True or false: .card is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #end (b) .big (c) span (d) #note
33. 33.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #big (b) .red (c) .end (d) .big
34. 34.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>
35. 35.True or false: .card is an element selector. (a) True (b) False
36. 36.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) li (b) #main (c) #logo (d) .main
38. 38.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
40. 40.True or false: .big is an id selector. (a) False (b) True

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