CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 85 · 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 sign starts a class selector? (a) & (b) @ (c) . (d) #
2. 2.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span class="red"> (c) <p class="box"> (d) <span id="big">
3. 3.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <h2 id="end"> (c) <span class="box"> (d) <p>
4. 4.🎯 Which CSS selector matches this element?
   <li class="box" id="end">Hello</li> (a) div (b) .box (c) .star (d) #hero
5. 5.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
7. 7.True or false: img is an element selector. (a) False (b) True
8. 8.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
9. 9.True or false: #logo is an id selector. (a) False (b) True
10. 10.True or false: .note is a class selector. (a) False (b) True
11. 11.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
12. 12.True or false: body is an element selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .red (b) .hero (c) p (d) .big
14. 14.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
15. 15.True or false: .big is an element selector. (a) False (b) True
16. 16.True or false: .menu is an element selector. (a) True (b) False
17. 17.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 id="note"> (c) <h2 class="note"> (d) <li class="red">
18. 18.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
19. 19.True or false: li is an element selector. (a) False (b) True
20. 20.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .box (b) #top (c) span (d) #red
22. 22.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <li id="intro"> (d) <div class="star">
23. 23.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .main (b) #red (c) #main (d) #logo
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
26. 26.True or false: h1 is an element selector. (a) True (b) False
27. 27.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="note"> (d) <li class="big">
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #end (b) .end (c) .box (d) #red
29. 29.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which element does the selector #intro style? (a) <li class="star"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <h2 id="main">
31. 31.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <h1 id="hero"> (c) <span> (d) <p class="menu">
32. 32.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div class="menu"> (c) <div class="star"> (d) <div id="star">
33. 33.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) div (b) span (c) #note (d) .big
34. 34.🎯 Can many elements share the same class? (a) No (b) Yes
35. 35.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) p (b) .note (c) .top (d) .big
36. 36.True or false: #hero is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) h1 (b) .main (c) .red (d) #logo
38. 38.True or false: li is a class selector. (a) False (b) True
39. 39.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="note"> (d) <span id="logo">

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