CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 634 · 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?
   <h2 class="menu" id="top">Hello</h2> (a) #menu (b) h2 (c) #intro (d) li
2. 2.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
3. 3.True or false: #hero is a class selector. (a) False (b) True
4. 4.True or false: .note is a class selector. (a) True (b) False
5. 5.True or false: .card is a class selector. (a) False (b) True
6. 6.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
7. 7.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="red" id="intro">Hello</h1> (a) #main (b) #intro (c) #red (d) .intro
9. 9.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
10. 10.True or false: .menu is an id selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #menu (b) .end (c) .note (d) #end
13. 13.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p class="note"> (c) <p id="note"> (d) <h1 class="red">
14. 14.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
15. 15.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h1 class="star"> (c) <div id="hero"> (d) <h2>
16. 16.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <li class="menu"> (c) <h2 class="star"> (d) <h2 class="box">
18. 18.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
19. 19.True or false: #top is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
21. 21.True or false: .menu is a class selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #big (b) .intro (c) h1 (d) h2
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) #end (b) li (c) h2 (d) .logo
24. 24.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) #logo (b) .red (c) .big (d) .main
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .end (b) .box (c) #box (d) .star
26. 26.True or false: li is a class selector. (a) False (b) True
27. 27.True or false: img is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) h2 (b) .menu (c) #end (d) #hero
29. 29.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <li class="big"> (c) <h2 id="logo"> (d) <h2 class="main">
30. 30.True or false: #main is an id selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) .menu (b) .hero (c) #star (d) .star
32. 32.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li id="logo"> (c) <li class="main"> (d) <div class="box">
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #note (b) h1 (c) #main (d) #intro
34. 34.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h2 class="menu"> (c) <h1 class="main"> (d) <h1 id="main">
35. 35.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <span class="star"> (c) <p> (d) <h2 id="main">
36. 36.True or false: .note is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #top (b) span (c) #box (d) .top
38. 38.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) #red (b) .main (c) div (d) .box
40. 40.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="end"> (c) <span id="hero"> (d) <p class="box">

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