CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 809 · 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.True or false: #logo is an element selector. (a) False (b) True
2. 2.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
3. 3.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) .intro (b) #main (c) .big (d) #big
4. 4.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <li> (c) <div class="box"> (d) <span id="end">
5. 5.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which element does the selector p style? (a) <h1> (b) <p class="menu"> (c) <li id="end"> (d) <h2 class="menu">
7. 7.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
8. 8.True or false: .star is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <p id="end"> (d) <li class="big">
10. 10.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .note (b) #note (c) #intro (d) .big
11. 11.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <h1 class="menu"> (c) <p class="main"> (d) <p id="main">
12. 12.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="main"> (c) <h2 id="intro"> (d) <li class="box">
13. 13.🎯 Which element does the selector li style? (a) <p id="end"> (b) <span class="star"> (c) <li class="star"> (d) <div>
14. 14.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #logo (b) .big (c) #note (d) #end
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #box (b) h2 (c) #main (d) #intro
16. 16.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #star (b) li (c) #top (d) .top
18. 18.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
20. 20.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <h2> (c) <div id="main"> (d) <li class="note">
21. 21.True or false: #end is an id selector. (a) False (b) True
22. 22.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h2 class="star"> (c) <h1 id="red"> (d) <h1 class="red">
23. 23.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <div class="note"> (d) <h2 class="note">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) .note (c) #top (d) #menu
25. 25.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #red (b) .box (c) #top (d) #intro
26. 26.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <div class="big"> (c) <span> (d) <p class="big">
27. 27.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #red (b) p (c) h1 (d) #top
29. 29.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <div id="top"> (c) <span class="menu"> (d) <div class="hero">
30. 30.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .menu (b) p (c) #main (d) #logo
31. 31.True or false: body is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) li (c) #logo (d) div
33. 33.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #logo (b) #menu (c) div (d) .note
35. 35.True or false: .big is a class selector. (a) False (b) True
36. 36.🎯 Can many elements share the same class? (a) No (b) Yes
37. 37.True or false: .note is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .box (b) #box (c) .end (d) #hero
39. 39.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) h1 (b) #intro (c) .top (d) p
40. 40.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .top (b) .red (c) #red (d) .box

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