CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 860 · 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 element does the selector .red style? (a) <div class="star"> (b) <li class="box"> (c) <li id="red"> (d) <li class="red">
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <span id="note"> (d) <p class="red">
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="logo">Hello</li> (a) div (b) #star (c) li (d) #end
6. 6.True or false: .menu is an element selector. (a) False (b) True
7. 7.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
9. 9.True or false: h1 is an id selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) span (b) #logo (c) div (d) #box
11. 11.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
12. 12.True or false: .big is a class selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .top (c) p (d) .big
14. 14.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #hero (b) .big (c) #note (d) #end
15. 15.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 id="red">
16. 16.True or false: img is a class selector. (a) True (b) False
17. 17.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h2 (b) #intro (c) .intro (d) #main
19. 19.True or false: .menu is a class selector. (a) True (b) False
20. 20.True or false: li is a class selector. (a) False (b) True
21. 21.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which element does the selector li style? (a) <p id="main"> (b) <span class="note"> (c) <div> (d) <li class="note">
23. 23.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #logo (b) #end (c) .logo (d) #red
24. 24.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <h1 id="end"> (c) <p class="menu"> (d) <span>
29. 29.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <h2 class="red"> (c) <li> (d) <div class="red">
31. 31.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="hero"> (c) <li class="red"> (d) <h2 id="top">
32. 32.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="red"> (d) <span class="big">
33. 33.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
34. 34.True or false: #top is an element selector. (a) True (b) False
35. 35.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) p (b) #main (c) .red (d) #red
37. 37.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <span class="big"> (c) <div class="note"> (d) <div id="menu">
38. 38.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="box"> (c) <li id="end"> (d) <li id="hero">
39. 39.True or false: .card is an id selector. (a) True (b) False
40. 40.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h2 id="logo"> (c) <h1 class="note"> (d) <p>

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