CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 553 · 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 CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) #main (b) span (c) .red (d) div
2. 2.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="box" id="top">Hello</h1> (a) h1 (b) #intro (c) #box (d) h2
5. 5.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h2 class="menu">
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which CSS selector matches this element?
   <li class="box" id="top">Hello</li> (a) div (b) .star (c) #intro (d) .box
8. 8.🎯 Which element does the selector #end style? (a) <span class="big"> (b) <div class="end"> (c) <div id="hero"> (d) <div id="end">
9. 9.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <li class="box"> (d) <h1 class="box">
10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="star"> (d) <span class="star">
12. 12.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: li is an id selector. (a) False (b) True
14. 14.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
15. 15.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li id="big"> (d) <li class="red">
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #logo (b) #end (c) #box (d) h1
17. 17.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
18. 18.True or false: h1 is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h1 id="main"> (d) <h2 class="red">
20. 20.True or false: .star is an id selector. (a) True (b) False
21. 21.True or false: #main is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="end"> (c) <li> (d) <h2 class="note">
24. 24.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <p id="star"> (c) <h1 class="note"> (d) <p class="menu">
25. 25.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <h2 id="note"> (c) <h2 class="big"> (d) <li class="red">
26. 26.True or false: .menu is a class selector. (a) False (b) True
27. 27.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <p id="main"> (d) <li class="big">
28. 28.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) h1 (b) #hero (c) #red (d) .hero
29. 29.🎯 Which element does the selector div style? (a) <div class="big"> (b) <p class="big"> (c) <span> (d) <h1 id="hero">
30. 30.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h2 class="red"> (c) <p class="red"> (d) <h1>
31. 31.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) #top (c) .box (d) span
32. 32.🎯 Which element does the selector #logo style? (a) <span class="box"> (b) <div id="logo"> (c) <div class="logo"> (d) <div id="end">
33. 33.True or false: .card is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <p id="top"> (c) <p class="hero"> (d) <h1 class="note">
35. 35.True or false: body is an id selector. (a) False (b) True
36. 36.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
37. 37.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
38. 38.True or false: body is a class selector. (a) True (b) False
39. 39.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .main (b) #star (c) .menu (d) h1

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