CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 328 · 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.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
3. 3.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <li class="box"> (c) <div id="intro"> (d) <h2>
4. 4.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: .big is a class selector. (a) True (b) False
6. 6.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="star"> (c) <h2 class="menu"> (d) <h1 class="box">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) .big (b) .hero (c) #note (d) h1
10. 10.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <h1 class="menu"> (c) <h2> (d) <div id="logo">
11. 11.True or false: #main is an element selector. (a) False (b) True
12. 12.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p id="menu"> (c) <p class="note"> (d) <h1 class="big">
13. 13.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .star (b) #end (c) div (d) .logo
15. 15.True or false: body is a class selector. (a) True (b) False
16. 16.True or false: .star is a class selector. (a) False (b) True
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.True or false: .note is a class selector. (a) False (b) True
19. 19.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <p class="note"> (c) <span class="star"> (d) <span class="menu">
21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) h1 (c) #top (d) #menu
22. 22.True or false: li is an element selector. (a) False (b) True
23. 23.True or false: #top is an id selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .top (b) p (c) span (d) #note
25. 25.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .top (b) h2 (c) h1 (d) #intro
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) .red (b) .big (c) h2 (d) .end
28. 28.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
29. 29.True or false: .card is an element selector. (a) True (b) False
30. 30.True or false: h1 is a class selector. (a) False (b) True
31. 31.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span id="logo"> (c) <p class="box"> (d) <span class="main">
33. 33.True or false: .big is an id selector. (a) False (b) True
34. 34.True or false: img is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .note (b) span (c) #hero (d) .end
36. 36.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
37. 37.True or false: #hero is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #logo (b) .box (c) .main (d) #main
39. 39.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #end (b) span (c) .logo (d) p
40. 40.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .main (b) div (c) .star (d) #box

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