CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 409 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
2. 2.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
3. 3.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h1 class="star"> (c) <h2 id="top"> (d) <p>
5. 5.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="note"> (c) <span class="big"> (d) <div class="menu">
8. 8.🎯 Which element does the selector #top style? (a) <span class="red"> (b) <div id="intro"> (c) <div class="top"> (d) <div id="top">
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) #note (b) #main (c) .intro (d) .note
10. 10.True or false: .note is an element selector. (a) True (b) False
11. 11.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p class="end"> (c) <h1 class="big"> (d) <p id="end">
12. 12.True or false: p is a class selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .red (b) #intro (c) li (d) div
14. 14.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h1 class="big"> (c) <h2 class="box"> (d) <h1 class="red">
15. 15.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <p id="hero"> (d) <li class="red">
16. 16.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <p class="menu"> (d) <span id="intro">
17. 17.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .note (b) #main (c) .intro (d) div
19. 19.True or false: .big is a class selector. (a) False (b) True
20. 20.True or false: .menu is a class selector. (a) False (b) True
21. 21.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .box (b) div (c) #main (d) #intro
24. 24.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <li id="hero"> (c) <p class="star"> (d) <h1>
25. 25.True or false: img is a class selector. (a) True (b) False
26. 26.True or false: #hero is an id selector. (a) False (b) True
27. 27.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <p class="menu"> (c) <h1 id="logo"> (d) <span>
28. 28.True or false: .big is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .logo (b) #menu (c) #logo (d) .note
30. 30.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #star (b) #intro (c) .menu (d) .star
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #star (b) .menu (c) h1 (d) .intro
32. 32.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="intro"> (c) <h1 class="intro"> (d) <h1 id="main">
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) .big (c) h2 (d) h1
34. 34.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) #logo (c) p (d) #note
35. 35.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
36. 36.True or false: img is an element selector. (a) False (b) True
37. 37.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li id="logo"> (c) <div class="big"> (d) <li class="main">
38. 38.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
39. 39.True or false: #logo is an id selector. (a) False (b) True
40. 40.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector

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