CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 663 · 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 element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <li class="big"> (d) <h1 class="big">
2. 2.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.True or false: #end is an id selector. (a) False (b) True
5. 5.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <p id="star"> (d) <h1 class="note">
6. 6.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
7. 7.True or false: .menu is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="note"> (c) <span class="menu"> (d) <span id="menu">
9. 9.True or false: p is an element selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #intro (b) #top (c) div (d) #big
11. 11.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h1 class="menu"> (c) <li class="menu"> (d) <h2>
12. 12.True or false: p is an id selector. (a) False (b) True
13. 13.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
14. 14.True or false: .note is an element selector. (a) False (b) True
15. 15.True or false: #main is a class selector. (a) True (b) False
16. 16.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #main (b) .big (c) .intro (d) h2
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #note (b) .note (c) .big (d) #logo
20. 20.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
21. 21.True or false: img is an id selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #box (b) .box (c) #intro (d) .top
23. 23.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) div (b) .intro (c) .star (d) #main
24. 24.True or false: .note is a class selector. (a) False (b) True
25. 25.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <li class="star"> (c) <h2 id="hero"> (d) <h2 class="end">
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) div (b) .intro (c) #note (d) .big
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .star (b) .menu (c) #star (d) #top
28. 28.True or false: .big is an element selector. (a) False (b) True
29. 29.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
30. 30.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
31. 31.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <li class="star"> (c) <div> (d) <span class="star">
32. 32.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <li class="red"> (c) <h2 id="logo"> (d) <h2 id="main">
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .logo (b) .note (c) .menu (d) #end
34. 34.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h2 class="red">
35. 35.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="box">
36. 36.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <span class="star"> (d) <div class="red">
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #red (b) .intro (c) h2 (d) h1
38. 38.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
39. 39.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .big (b) #note (c) #hero (d) #top
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .top (b) h2 (c) h1 (d) #star

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