CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 665 · 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="note" id="logo">Hello</h1> (a) h1 (b) h2 (c) .big (d) #end
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.True or false: p is a class selector. (a) False (b) True
4. 4.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
5. 5.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
6. 6.True or false: #end is an id selector. (a) True (b) False
7. 7.True or false: .note is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) .top (b) #intro (c) div (d) #top
9. 9.🎯 Which CSS selector matches this element?
   <div class="red" id="top">Hello</div> (a) #intro (b) #red (c) .red (d) .top
10. 10.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
11. 11.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <span> (c) <div class="big"> (d) <p class="big">
12. 12.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
14. 14.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <h2 id="top"> (c) <li class="note"> (d) <h2 class="top">
16. 16.True or false: li is an element selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) #menu (c) .menu (d) #intro
18. 18.True or false: #logo is an id selector. (a) True (b) False
19. 19.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) .hero (b) div (c) #box (d) li
21. 21.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <p class="box"> (c) <span id="intro"> (d) <span id="main">
23. 23.🎯 Which element does the selector #intro style? (a) <li class="note"> (b) <h2 class="intro"> (c) <h2 id="main"> (d) <h2 id="intro">
24. 24.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p class="top"> (c) <h1 class="red"> (d) <p id="top">
25. 25.🎯 Which element does the selector #main style? (a) <span class="note"> (b) <div class="main"> (c) <div id="logo"> (d) <div id="main">
26. 26.True or false: .card is an id selector. (a) False (b) True
27. 27.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
29. 29.True or false: body is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) li (b) #intro (c) #main (d) .menu
31. 31.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">
32. 32.True or false: .big is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) p (c) #menu (d) .top
34. 34.True or false: #main is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .star (b) .menu (c) #star (d) span
36. 36.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li id="menu"> (c) <li class="note"> (d) <div class="big">
37. 37.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h2 id="hero"> (c) <p> (d) <h1 class="box">
38. 38.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="menu"> (c) <h1> (d) <p class="menu">
39. 39.True or false: #main is a class selector. (a) True (b) False
40. 40.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector

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