CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 163 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <span class="menu" id="top">Hello</span> (a) .top (b) .note (c) #menu (d) span
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) .logo (b) h1 (c) .red (d) h2
5. 5.🎯 Which CSS selector matches this element?
   <div class="box" id="intro">Hello</div> (a) #main (b) .intro (c) #intro (d) #box
6. 6.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
7. 7.🎯 Which element does the selector div style? (a) <span> (b) <p class="menu"> (c) <h1 id="main"> (d) <div class="menu">
8. 8.True or false: .menu is an id selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="end">Hello</span> (a) #end (b) #hero (c) #big (d) .end
10. 10.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <h1 class="box"> (d) <p class="logo">
11. 11.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h2 class="red"> (d) <h1 id="main">
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .top (b) #big (c) #intro (d) #top
13. 13.True or false: li is an id selector. (a) False (b) True
14. 14.True or false: #main is an element selector. (a) False (b) True
15. 15.True or false: p is an element selector. (a) True (b) False
16. 16.True or false: .note is an id selector. (a) True (b) False
17. 17.True or false: img is an element selector. (a) False (b) True
18. 18.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h1 class="red">
20. 20.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) div (b) #main (c) li (d) .red
21. 21.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="box"> (c) <span id="logo"> (d) <h2 class="box">
22. 22.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #star (b) .main (c) #logo (d) .star
23. 23.True or false: .card is a class selector. (a) True (b) False
24. 24.True or false: .note is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span id="logo"> (c) <p class="red"> (d) <span class="main">
26. 26.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) .logo (b) #end (c) #logo (d) #star
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) #big (c) #end (d) .big
29. 29.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="red"> (d) <li class="red">
30. 30.True or false: img is an id selector. (a) False (b) True
31. 31.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
32. 32.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h2 class="box"> (c) <h1 class="big"> (d) <h1 id="big">
33. 33.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #box (b) .top (c) #top (d) #intro
35. 35.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h2 id="intro"> (c) <p> (d) <h1 class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) .top (c) h1 (d) h2
37. 37.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h2 class="note"> (c) <h1 id="intro"> (d) <h1 id="top">
39. 39.True or false: .big is an id selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) .note (c) .menu (d) div

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