CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 271 · 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 #intro style? (a) <span class="big"> (b) <div id="main"> (c) <div class="intro"> (d) <div id="intro">
2. 2.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="red"> (c) <span class="box"> (d) <span id="red">
3. 3.True or false: img is a class selector. (a) True (b) False
4. 4.True or false: #top is an element selector. (a) True (b) False
5. 5.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="hero"> (c) <h1 class="box"> (d) <span class="box">
6. 6.🎯 Can many elements share the same class? (a) Yes (b) No
7. 7.🎯 Which CSS selector matches this element?
   <span class="star" id="end">Hello</span> (a) #star (b) #hero (c) #end (d) .menu
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
9. 9.True or false: li is a class selector. (a) False (b) True
10. 10.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
11. 11.True or false: .menu is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector h2 style? (a) <span id="main"> (b) <div class="star"> (c) <li> (d) <h2 class="star">
13. 13.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
14. 14.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Which element does the selector .red style? (a) <div class="red"> (b) <div class="box"> (c) <div id="red"> (d) <span class="star">
16. 16.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span id="star"> (c) <span class="star"> (d) <span class="menu">
17. 17.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <p class="box"> (d) <span class="intro">
18. 18.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <div id="intro"> (c) <h1 class="big"> (d) <h2>
19. 19.True or false: #logo is an id selector. (a) False (b) True
20. 20.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="note"> (c) <div id="end"> (d) <h1 class="note">
21. 21.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) .top (b) #box (c) #top (d) #intro
23. 23.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 id="end"> (c) <h2 class="end"> (d) <li class="menu">
24. 24.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .box (b) #top (c) span (d) .top
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .main (b) #logo (c) #main (d) h2
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) h1 (b) h2 (c) .intro (d) .box
27. 27.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="logo"> (c) <h1 id="end"> (d) <h2 class="big">
28. 28.True or false: .star is an id selector. (a) False (b) True
29. 29.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #intro (b) #top (c) h1 (d) .top
31. 31.True or false: li is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .note (b) .end (c) .big (d) #note
33. 33.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
34. 34.True or false: .big is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <span class="note"> (c) <div id="top"> (d) <div class="top">
36. 36.🎯 Which element does the selector div style? (a) <p class="star"> (b) <div class="star"> (c) <span> (d) <h1 id="end">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) .star (c) #end (d) h2
38. 38.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) .box (b) #box (c) .star (d) .top
39. 39.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <div class="big"> (c) <li class="end"> (d) <li id="end">

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