CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 824 · 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?
   <h2 class="red" id="top">Hello</h2> (a) .box (b) .red (c) li (d) .top
2. 2.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
3. 3.🎯 Which CSS selector matches this element?
   <span class="menu" id="main">Hello</span> (a) #menu (b) .menu (c) #logo (d) p
4. 4.True or false: .big is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="box" id="logo">Hello</h1> (a) .star (b) .box (c) .logo (d) #end
6. 6.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
7. 7.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
8. 8.True or false: .star is an element selector. (a) True (b) False
9. 9.True or false: img is an element selector. (a) True (b) False
10. 10.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #note (b) div (c) #end (d) li
12. 12.True or false: #end is a class selector. (a) False (b) True
13. 13.True or false: .menu is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #main (b) .big (c) h1 (d) #big
15. 15.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) #big (b) h2 (c) li (d) .red
17. 17.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #intro (b) #red (c) .top (d) #top
18. 18.True or false: .card is a class selector. (a) True (b) False
19. 19.🎯 Which element does the selector #top style? (a) <div class="big"> (b) <li id="top"> (c) <li class="top"> (d) <li id="intro">
20. 20.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 class="intro"> (c) <h2 class="star"> (d) <h1 id="main">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) h1 (b) h2 (c) .box (d) #intro
22. 22.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <span class="red"> (c) <div class="big"> (d) <div id="note">
23. 23.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p class="box">
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) .end (b) .note (c) h1 (d) p
27. 27.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: h1 is an element selector. (a) False (b) True
30. 30.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="big"> (d) <span class="red">
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #box (b) div (c) .logo (d) .star
32. 32.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) h1 (b) #hero (c) .red (d) .end
33. 33.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <span id="top"> (d) <p class="box">
34. 34.🎯 Which element does the selector #hero style? (a) <li class="hero"> (b) <li id="top"> (c) <li id="hero"> (d) <div class="star">
35. 35.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="box"> (c) <h2 class="star"> (d) <h2 id="box">
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) span (b) .intro (c) div (d) #note
37. 37.True or false: p is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <li class="star"> (d) <span class="star">
39. 39.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="big"> (c) <div> (d) <span class="big">
40. 40.🎯 Can many elements share the same class? (a) No (b) Yes

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