CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 321 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <h2 id="note">
3. 3.🎯 Which CSS selector matches this element?
   <span class="note" id="main">Hello</span> (a) #note (b) p (c) .note (d) .main
4. 4.True or false: body is a class selector. (a) False (b) True
5. 5.True or false: .menu is an element selector. (a) False (b) True
6. 6.True or false: #top is an id selector. (a) False (b) True
7. 7.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <li class="box" id="end">Hello</li> (a) #box (b) li (c) div (d) #hero
9. 9.🎯 Which CSS selector matches this element?
   <li class="big" id="intro">Hello</li> (a) #big (b) .red (c) #intro (d) div
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .end (b) li (c) #end (d) #big
11. 11.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span class="box"> (c) <p class="menu"> (d) <span id="box">
12. 12.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h2 class="big"> (d) <h1 id="logo">
14. 14.True or false: #end is an element selector. (a) False (b) True
15. 15.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
17. 17.True or false: .star is an id selector. (a) False (b) True
18. 18.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="big"> (c) <span class="red"> (d) <div class="note">
19. 19.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .note (b) #menu (c) .top (d) .menu
20. 20.True or false: #top is a class selector. (a) False (b) True
21. 21.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h2 class="note"> (c) <h1 id="main"> (d) <h1 id="logo">
22. 22.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #note (b) h1 (c) p (d) .end
23. 23.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
24. 24.True or false: .note is an element selector. (a) False (b) True
25. 25.🎯 Which element does the selector #intro style? (a) <h2 class="note"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
26. 26.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
27. 27.🎯 Which element does the selector span style? (a) <span class="note"> (b) <p> (c) <h2 id="end"> (d) <h1 class="note">
28. 28.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li id="note"> (c) <li class="note"> (d) <div class="red">
29. 29.True or false: .big is an id selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .logo (b) #note (c) span (d) .note
31. 31.True or false: li is an id selector. (a) False (b) True
32. 32.True or false: .big is an element selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) .red (b) .main (c) li (d) .big
34. 34.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .star (b) #box (c) li (d) .main
35. 35.🎯 Which element does the selector #top style? (a) <span class="star"> (b) <div id="top"> (c) <div class="top"> (d) <div id="intro">
36. 36.True or false: .star is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #end (b) p (c) #big (d) span
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #top (b) #star (c) .menu (d) #hero
39. 39.🎯 Which element does the selector div style? (a) <span> (b) <p class="box"> (c) <h1 id="top"> (d) <div class="box">
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) .box (b) .red (c) .top (d) #intro

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