CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 223 · 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 h1 style? (a) <div id="end"> (b) <li class="note"> (c) <h1 class="note"> (d) <h2>
2. 2.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
3. 3.True or false: img is an id selector. (a) True (b) False
4. 4.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
5. 5.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
6. 6.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) #menu (b) p (c) span (d) .note
7. 7.🎯 Which element does the selector #logo style? (a) <h2 class="menu"> (b) <h1 id="end"> (c) <h1 id="logo"> (d) <h1 class="logo">
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="box" id="logo">Hello</h2> (a) .logo (b) .star (c) .box (d) li
9. 9.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <h1 class="star"> (c) <p class="intro"> (d) <p id="main">
10. 10.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
11. 11.True or false: .note is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 id="end"> (c) <h2 id="logo"> (d) <h2 class="logo">
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .note (b) #intro (c) #top (d) .top
14. 14.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) #hero (c) .red (d) #end
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) #red (b) h2 (c) li (d) .box
18. 18.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
19. 19.True or false: .note is an element selector. (a) True (b) False
20. 20.True or false: h1 is an element selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .box (b) #red (c) #intro (d) span
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .end (b) #box (c) #hero (d) #end
23. 23.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
24. 24.🎯 Can many elements share the same class? (a) Yes (b) No
25. 25.True or false: .big is an id selector. (a) True (b) False
26. 26.True or false: .star is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h2 class="big"> (c) <p class="big"> (d) <h1>
28. 28.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <h2 class="box"> (d) <li class="star">
29. 29.True or false: img is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) h1 (c) #red (d) .red
31. 31.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="star"> (c) <div class="box"> (d) <div id="box">
33. 33.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) .intro (b) #main (c) li (d) #star
34. 34.🎯 Which element does the selector #end style? (a) <h1 class="note"> (b) <p id="end"> (c) <p class="end"> (d) <p id="hero">
35. 35.True or false: body is an id selector. (a) True (b) False
36. 36.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <div id="end"> (d) <span class="star">
37. 37.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <span> (c) <p class="menu"> (d) <div class="menu">
39. 39.True or false: p is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector #main style? (a) <li class="box"> (b) <h2 id="main"> (c) <h2 class="main"> (d) <h2 id="logo">

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