CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 148 · 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) 2 (b) any number (c) 5 (d) 1
3. 3.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
4. 4.True or false: #top is an id selector. (a) False (b) True
5. 5.True or false: .note is an element selector. (a) False (b) True
6. 6.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 id="intro"> (c) <h1 class="top"> (d) <h2 class="box">
7. 7.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="logo">Hello</span> (a) .logo (b) .big (c) .red (d) #end
10. 10.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="note"> (c) <li class="note"> (d) <div id="intro">
11. 11.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) span (b) .star (c) .logo (d) #box
12. 12.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) span (b) #star (c) p (d) .intro
15. 15.True or false: #hero is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <h1 class="red"> (d) <li class="red">
17. 17.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <span id="main"> (d) <div class="note">
18. 18.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <h1 id="intro"> (d) <p class="star">
19. 19.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .red (b) #intro (c) #big (d) #main
20. 20.True or false: .card is an element selector. (a) True (b) False
21. 21.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) #hero (b) .menu (c) .end (d) .star
23. 23.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <li class="big"> (c) <h2 class="menu"> (d) <h2 id="menu">
24. 24.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .box (b) #red (c) .red (d) #end
25. 25.True or false: .star is a class selector. (a) False (b) True
26. 26.True or false: .menu is an element selector. (a) False (b) True
27. 27.True or false: body is a class selector. (a) False (b) True
28. 28.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="logo"> (c) <h2 id="main"> (d) <li class="box">
29. 29.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
30. 30.True or false: #main is a class selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #intro (b) #note (c) .top (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #logo (b) #main (c) .main (d) p
33. 33.True or false: #end is an id selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .top (b) h2 (c) .big (d) #intro
35. 35.True or false: #end is an element selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) h2 (b) .top (c) h1 (d) #intro
37. 37.🎯 Which element does the selector #logo style? (a) <li id="logo"> (b) <li id="end"> (c) <li class="logo"> (d) <div class="box">
38. 38.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <h2 id="intro"> (c) <span class="box"> (d) <p>
39. 39.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <div class="big"> (c) <li id="menu"> (d) <li class="menu">
40. 40.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <li class="big"> (c) <span class="big"> (d) <div>

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