CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 992 · 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 #top style? (a) <span class="menu"> (b) <div class="top"> (c) <div id="top"> (d) <div id="intro">
2. 2.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) .main (b) p (c) .box (d) .red
3. 3.🎯 Which CSS selector matches this element?
   <span class="red" id="hero">Hello</span> (a) #red (b) .hero (c) span (d) .box
4. 4.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
5. 5.True or false: #logo is an id selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="top">Hello</h1> (a) #intro (b) .note (c) #menu (d) .menu
7. 7.True or false: li is an id selector. (a) False (b) True
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="intro">Hello</h2> (a) #main (b) li (c) h2 (d) .note
9. 9.🎯 Which element does the selector #end style? (a) <div class="red"> (b) <li id="end"> (c) <li class="end"> (d) <li id="hero">
10. 10.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) #main (b) .star (c) .box (d) #box
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <h2> (c) <li class="box"> (d) <div id="hero">
13. 13.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .top (b) h1 (c) #intro (d) p
15. 15.True or false: img is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #logo (b) .main (c) #main (d) #star
17. 17.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <li class="star"> (c) <h2 class="box"> (d) <h2 id="red">
18. 18.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="logo">
20. 20.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .red (b) #red (c) span (d) .main
22. 22.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="star"> (d) <h1 class="menu">
23. 23.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
24. 24.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .red (b) div (c) #big (d) li
25. 25.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <li> (c) <span id="main"> (d) <h2 class="menu">
26. 26.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <p class="note"> (c) <span> (d) <div class="note">
27. 27.🎯 What kind of selector is .menu? (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: #end is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <p class="note"> (c) <span class="hero"> (d) <span id="hero">
31. 31.True or false: .card is a class selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) span (b) .star (c) p (d) #main
33. 33.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #note (b) .note (c) p (d) .hero
35. 35.True or false: h1 is a class selector. (a) True (b) False
36. 36.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
37. 37.True or false: #logo is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .red (b) h1 (c) #main (d) h2
39. 39.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="top"> (d) <h2 class="note">
40. 40.True or false: #main is an element selector. (a) True (b) False

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