CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 762 · 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?
   <h1 class="star" id="hero">Hello</h1> (a) h1 (b) #top (c) .menu (d) h2
2. 2.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
3. 3.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) span (b) #main (c) div (d) .big
6. 6.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) .big (b) #intro (c) #note (d) #main
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) #logo (b) #end (c) .red (d) #big
8. 8.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
9. 9.True or false: #main is an id selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) div (b) #hero (c) .end (d) span
11. 11.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) #box (b) div (c) .intro (d) .star
12. 12.True or false: p is an id selector. (a) False (b) True
13. 13.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="logo"> (c) <li class="note"> (d) <h2 id="main">
15. 15.True or false: .note is a class selector. (a) False (b) True
16. 16.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) li (b) #end (c) .note (d) #logo
18. 18.True or false: #end is a class selector. (a) True (b) False
19. 19.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
21. 21.True or false: .big is a class selector. (a) False (b) True
22. 22.True or false: h1 is an id selector. (a) False (b) True
23. 23.True or false: .card is a class selector. (a) True (b) False
24. 24.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
25. 25.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <li class="star"> (c) <h2 id="end"> (d) <h2 class="end">
27. 27.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
28. 28.True or false: #hero is an id selector. (a) True (b) False
29. 29.True or false: img is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) .end (b) #hero (c) .note (d) .menu
31. 31.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <div class="box"> (c) <span> (d) <p class="box">
32. 32.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .big (b) .main (c) #note (d) #main
33. 33.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .top (b) #note (c) #top (d) #intro
34. 34.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <li class="box"> (c) <div id="intro"> (d) <h2>
35. 35.🎯 Which element does the selector #hero style? (a) <h1 class="big"> (b) <p id="top"> (c) <p id="hero"> (d) <p class="hero">
36. 36.True or false: #end is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .menu (b) #end (c) li (d) .logo
38. 38.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <li class="red"> (c) <h2> (d) <div id="end">
39. 39.True or false: .note is an element selector. (a) False (b) True
40. 40.True or false: #logo is an id selector. (a) False (b) True

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