CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 507 · 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 #main style? (a) <span class="menu"> (b) <div id="logo"> (c) <div id="main"> (d) <div class="main">
2. 2.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <span id="top"> (d) <p class="big">
3. 3.🎯 Which element does the selector div style? (a) <p class="star"> (b) <h1 id="end"> (c) <span> (d) <div class="star">
4. 4.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) .intro (b) #main (c) #intro (d) span
5. 5.🎯 Which CSS selector matches this element?
   <span class="big" id="end">Hello</span> (a) p (b) #big (c) .red (d) span
6. 6.True or false: .note is an id selector. (a) False (b) True
7. 7.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
8. 8.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
9. 9.True or false: #main is a class selector. (a) False (b) True
10. 10.True or false: #top is an element selector. (a) False (b) True
11. 11.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <p class="menu"> (c) <li id="intro"> (d) <h1>
12. 12.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
13. 13.True or false: p is an element selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .main (b) #logo (c) h2 (d) #box
15. 15.True or false: .card is a class selector. (a) False (b) True
16. 16.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
17. 17.True or false: .menu is a class selector. (a) True (b) False
18. 18.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
19. 19.🎯 Can many elements share the same class? (a) Yes (b) No
20. 20.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .big (b) p (c) #hero (d) #end
21. 21.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <p> (c) <span class="big"> (d) <h1 class="big">
22. 22.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
23. 23.True or false: h1 is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #logo (b) .note (c) .menu (d) .main
25. 25.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
26. 26.True or false: #top is a class selector. (a) False (b) True
27. 27.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 id="main"> (c) <h1 class="main"> (d) <h2 class="box">
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .star (b) #main (c) .box (d) #box
29. 29.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <div class="big"> (c) <li id="end"> (d) <li id="logo">
30. 30.True or false: #hero is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <h1 class="note"> (d) <p id="star">
32. 32.🎯 Which element does the selector #hero style? (a) <div class="big"> (b) <li id="top"> (c) <li id="hero"> (d) <li class="hero">
33. 33.True or false: .star is a class selector. (a) True (b) False
34. 34.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
35. 35.True or false: .card is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) h2 (c) .big (d) h1
37. 37.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="red"> (c) <span class="big"> (d) <span id="big">
38. 38.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) #main (c) .menu (d) #logo
39. 39.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <h2 id="main"> (c) <h2 class="main"> (d) <li class="big">
40. 40.True or false: .card is an element selector. (a) True (b) False

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