CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 481 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
3. 3.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) #main (b) #red (c) .red (d) .box
5. 5.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
6. 6.True or false: .note is an id selector. (a) True (b) False
7. 7.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="star"> (c) <div class="star"> (d) <li>
8. 8.🎯 Which CSS selector matches this element?
   <p class="menu" id="hero">Hello</p> (a) h1 (b) #top (c) #menu (d) .menu
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) .top (b) .big (c) #note (d) .note
10. 10.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .big (b) #hero (c) #note (d) span
11. 11.True or false: .big is a class selector. (a) False (b) True
12. 12.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p id="box"> (c) <p class="star"> (d) <p class="box">
14. 14.True or false: .card is a class selector. (a) True (b) False
15. 15.True or false: h1 is an id selector. (a) False (b) True
16. 16.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) #top (c) .note (d) #menu
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 h1 style? (a) <li class="big"> (b) <h1 class="big"> (c) <h2> (d) <div id="end">
21. 21.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #note (b) p (c) .note (d) .end
22. 22.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="hero">
26. 26.True or false: .note is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) h2 (b) .menu (c) h1 (d) .top
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) #note (c) .note (d) .big
29. 29.True or false: #main is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #red (b) .top (c) h1 (d) .red
31. 31.True or false: #top is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) .menu (b) .note (c) #menu (d) #main
33. 33.True or false: h1 is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 class="menu"> (d) <h1 id="menu">
35. 35.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="box"> (d) <span class="box">
36. 36.True or false: #end is an id selector. (a) False (b) True
37. 37.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="note"> (d) <li class="big">
38. 38.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <p class="box"> (c) <span id="big"> (d) <span class="big">
39. 39.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) p (b) #hero (c) h1 (d) #box
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) li (b) div (c) .box (d) #logo

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