CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 543 · 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 .menu style? (a) <li class="note"> (b) <li class="menu"> (c) <div class="big"> (d) <li id="menu">
3. 3.🎯 Which CSS selector matches this element?
   <p class="note" id="hero">Hello</p> (a) .note (b) .big (c) #note (d) #top
4. 4.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) .main (b) #logo (c) p (d) #note
6. 6.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h2 class="star"> (c) <h1 id="red"> (d) <h1 class="red">
7. 7.True or false: body is an id selector. (a) False (b) True
8. 8.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
9. 9.True or false: body is a class selector. (a) False (b) True
10. 10.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <div class="box"> (c) <span id="logo"> (d) <li>
11. 11.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
12. 12.True or false: .big is an id selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #note (b) .intro (c) .big (d) #intro
14. 14.True or false: #main is a class selector. (a) True (b) False
15. 15.🎯 Which element does the selector span style? (a) <h1 class="note"> (b) <h2 id="top"> (c) <span class="note"> (d) <p>
16. 16.True or false: #end is a class selector. (a) False (b) True
17. 17.True or false: #logo is an id selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) #hero (c) #end (d) .red
19. 19.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
20. 20.True or false: #top is an element selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) h2 (b) .menu (c) #star (d) li
22. 22.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #hero (b) h2 (c) #star (d) #end
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) div (b) span (c) .big (d) #hero
27. 27.True or false: .card is an id selector. (a) True (b) False
28. 28.True or false: #hero is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) li (b) div (c) #intro (d) #star
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) .logo (b) div (c) #red (d) .box
31. 31.True or false: h1 is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) #end (b) #star (c) #hero (d) .menu
33. 33.🎯 Which element does the selector #intro style? (a) <h2 class="box"> (b) <h1 class="intro"> (c) <h1 id="main"> (d) <h1 id="intro">
34. 34.True or false: #main is an element selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) h1 (b) #main (c) #box (d) #intro
36. 36.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span class="red"> (c) <span id="red"> (d) <p class="star">
37. 37.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
38. 38.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p class="red"> (c) <h1 class="star"> (d) <p id="red">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #box (b) #end (c) #hero (d) .star
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) div (b) #red (c) li (d) .end

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