CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 51 · 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?
   <li class="menu" id="main">Hello</li> (a) .note (b) .menu (c) .main (d) #menu
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) #box (b) h2 (c) li (d) .star
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="logo">Hello</h1> (a) #menu (b) .menu (c) h2 (d) .logo
4. 4.True or false: .big is an element selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="end">Hello</li> (a) .end (b) #end (c) .red (d) #big
6. 6.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) .red (b) .big (c) #big (d) div
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="top">Hello</h1> (a) #top (b) .top (c) .note (d) #intro
8. 8.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) #menu (b) .menu (c) #main (d) p
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="main">Hello</span> (a) #logo (b) .big (c) #big (d) .main
10. 10.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <p class="big"> (d) <li id="intro">
11. 11.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) p (b) .note (c) span (d) #menu
12. 12.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
13. 13.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
14. 14.🎯 Which element does the selector li style? (a) <li class="box"> (b) <div> (c) <span class="box"> (d) <p id="end">
15. 15.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.🎯 Which element does the selector p style? (a) <li id="main"> (b) <h1> (c) <h2 class="star"> (d) <p class="star">
18. 18.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="main"> (c) <span> (d) <div class="note">
19. 19.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="box"> (c) <span class="box"> (d) <h2 id="hero">
20. 20.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="star"> (c) <p class="menu"> (d) <p id="star">
23. 23.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
24. 24.True or false: #main is an element selector. (a) True (b) False
25. 25.True or false: #hero is an element selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) #box (b) .box (c) #intro (d) .star
27. 27.True or false: h1 is an id selector. (a) True (b) False
28. 28.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) .red (b) li (c) #big (d) #main
30. 30.True or false: .card is a class selector. (a) False (b) True
31. 31.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <li class="note"> (d) <h1 class="note">
32. 32.True or false: .star is a class selector. (a) True (b) False
33. 33.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <h1 class="star"> (d) <p id="intro">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .top (b) #note (c) h2 (d) li
35. 35.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="big">
36. 36.🎯 Which element does the selector #top style? (a) <div class="star"> (b) <li id="intro"> (c) <li id="top"> (d) <li class="top">
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .note (b) #hero (c) .big (d) #note
38. 38.True or false: li is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) #note (c) #end (d) p
40. 40.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5

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