CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 154 · 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 #logo style? (a) <p id="end"> (b) <h1 class="star"> (c) <p class="logo"> (d) <p id="logo">
2. 2.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
3. 3.True or false: .note is a class selector. (a) False (b) True
4. 4.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
5. 5.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) #menu (b) #intro (c) .note (d) .intro
7. 7.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h2 class="red">
8. 8.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="top"> (d) <h2>
9. 9.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) .note (c) h1 (d) #note
12. 12.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #main (b) #box (c) #logo (d) div
13. 13.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
14. 14.True or false: .menu is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .box (b) .logo (c) .star (d) #box
16. 16.True or false: #top is an id selector. (a) False (b) True
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <p id="intro"> (d) <span class="note">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #intro (b) h1 (c) #big (d) h2
22. 22.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #box (b) .box (c) p (d) .top
23. 23.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .note (b) span (c) #logo (d) #main
24. 24.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <span id="intro"> (d) <li>
25. 25.True or false: body is a class selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) span (b) .logo (c) p (d) #end
27. 27.True or false: body is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) p (b) .star (c) #box (d) .main
30. 30.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) .end (c) #end (d) .red
32. 32.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #star (b) div (c) span (d) .main
33. 33.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .main (b) .big (c) h1 (d) #logo
35. 35.True or false: .menu is a class selector. (a) False (b) True
36. 36.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h2 class="box"> (c) <h1 id="big"> (d) <h1 class="red">
37. 37.True or false: .big is an id selector. (a) False (b) True
38. 38.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <p class="box"> (c) <p class="star"> (d) <h1 class="menu">
39. 39.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
40. 40.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .top (b) .big (c) li (d) #intro

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