CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 802 · 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: #top is a class selector. (a) True (b) False
2. 2.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h1 class="star"> (c) <h1 class="menu"> (d) <h2 class="note">
3. 3.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span id="intro"> (c) <span class="top"> (d) <p class="menu">
4. 4.🎯 Which CSS selector matches this element?
   <div class="big" id="hero">Hello</div> (a) #big (b) #top (c) .big (d) .red
5. 5.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <p class="big"> (d) <h2 class="big">
6. 6.True or false: .note is an id selector. (a) False (b) True
7. 7.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="box" id="logo">Hello</h1> (a) h2 (b) #box (c) .star (d) .box
9. 9.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <h1 class="box"> (c) <p id="big"> (d) <p class="red">
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) #menu (c) .menu (d) .note
11. 11.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 class="end"> (c) <li class="big"> (d) <h2 id="end">
12. 12.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="note"> (c) <h1 id="intro"> (d) <h1 class="intro">
13. 13.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <li id="logo"> (c) <h1> (d) <p class="star">
14. 14.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) span (b) div (c) #menu (d) .note
16. 16.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <span id="logo"> (c) <span class="logo"> (d) <p class="big">
17. 17.True or false: #hero is an element selector. (a) True (b) False
18. 18.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <p class="menu"> (c) <div class="menu"> (d) <span>
19. 19.🎯 Which element does the selector #intro style? (a) <p class="note"> (b) <span class="intro"> (c) <span id="main"> (d) <span id="intro">
20. 20.True or false: .big is an element selector. (a) False (b) True
21. 21.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
22. 22.🎯 Can many elements share the same class? (a) Yes (b) No
23. 23.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #note (b) p (c) #logo (d) .logo
24. 24.🎯 Which element does the selector #intro style? (a) <h2 id="intro"> (b) <li class="star"> (c) <h2 class="intro"> (d) <h2 id="main">
25. 25.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #intro (b) div (c) .top (d) #red
26. 26.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <h2 class="menu"> (c) <span id="end"> (d) <li>
27. 27.True or false: #hero is a class selector. (a) True (b) False
28. 28.🎯 Which element does the selector #intro style? (a) <div class="menu"> (b) <li id="main"> (c) <li class="intro"> (d) <li id="intro">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) #intro (c) #box (d) #top
30. 30.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) div (b) .logo (c) .box (d) .star
31. 31.🎯 Which element does the selector li style? (a) <p id="end"> (b) <div> (c) <li class="box"> (d) <span class="box">
32. 32.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
33. 33.True or false: #end is a class selector. (a) False (b) True
34. 34.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
36. 36.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
37. 37.True or false: p is an element selector. (a) False (b) True
38. 38.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
40. 40.True or false: img is an id selector. (a) True (b) False

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