CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 985 · 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?
   <li class="box" id="end">Hello</li> (a) div (b) #box (c) .end (d) .box
2. 2.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span class="star"> (c) <p class="note"> (d) <span id="star">
4. 4.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
5. 5.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) h1 (b) #end (c) .big (d) #big
6. 6.True or false: .card is an element selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <li class="star" id="main">Hello</li> (a) .star (b) .menu (c) #logo (d) .main
8. 8.True or false: .note is an element selector. (a) True (b) False
9. 9.True or false: #logo is an element selector. (a) False (b) True
10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 class="red">
12. 12.True or false: #logo is an id selector. (a) True (b) False
13. 13.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
14. 14.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) #main (c) div (d) span
15. 15.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="box"> (c) <li class="red"> (d) <div class="star">
16. 16.True or false: p is an element selector. (a) True (b) False
17. 17.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="star"> (c) <p id="top"> (d) <p id="hero">
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) .red (b) #hero (c) #red (d) p
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) .logo (c) #end (d) h2
20. 20.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <h2 id="box">
21. 21.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="red">
22. 22.True or false: .star is an id selector. (a) False (b) True
23. 23.True or false: .star is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector div style? (a) <span> (b) <p class="big"> (c) <h1 id="main"> (d) <div class="big">
25. 25.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) .top (c) h1 (d) #menu
27. 27.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <p class="big"> (c) <span id="intro"> (d) <span class="intro">
28. 28.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #end (b) span (c) .note (d) .end
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) .big (c) p (d) .intro
30. 30.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Can many elements share the same class? (a) No (b) Yes
32. 32.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <li class="red">
33. 33.True or false: h1 is an element selector. (a) True (b) False
34. 34.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) #intro (c) #main (d) span
36. 36.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .star (b) .menu (c) .intro (d) #star
37. 37.True or false: #hero is a class selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) li (b) #logo (c) .big (d) .note
39. 39.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h2 class="box"> (d) <h1 id="main">
40. 40.True or false: #main is a class selector. (a) False (b) True

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