CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 525 · 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 .red style? (a) <h1 class="red"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h2 class="star">
2. 2.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="note"> (c) <div class="menu"> (d) <span class="big">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="star" id="hero">Hello</h1> (a) .menu (b) h2 (c) #star (d) #hero
4. 4.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which element does the selector #intro style? (a) <div class="red"> (b) <li class="intro"> (c) <li id="intro"> (d) <li id="main">
7. 7.True or false: #top is a class selector. (a) True (b) False
8. 8.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 Which CSS selector matches this element?
   <p class="box" id="top">Hello</p> (a) p (b) .star (c) #box (d) .top
10. 10.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) h1 (c) .menu (d) #menu
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #menu (b) h2 (c) .menu (d) #main
12. 12.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) #menu (c) .note (d) .menu
13. 13.🎯 Which element does the selector #hero style? (a) <div id="top"> (b) <span class="box"> (c) <div class="hero"> (d) <div id="hero">
14. 14.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) #menu (c) p (d) .note
15. 15.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
18. 18.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="end"> (c) <div id="hero"> (d) <span class="note">
19. 19.True or false: p is an id selector. (a) False (b) True
20. 20.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <div class="big"> (c) <li id="menu"> (d) <li class="note">
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) span (b) #hero (c) .red (d) #end
22. 22.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) span (b) #big (c) #intro (d) #main
23. 23.True or false: .menu is an id selector. (a) True (b) False
24. 24.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="hero"> (c) <div class="note"> (d) <p class="note">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) .menu (c) .main (d) h2
26. 26.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 class="big"> (c) <li class="box"> (d) <h2 id="big">
27. 27.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="logo">
28. 28.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="intro"> (c) <h2 class="big"> (d) <h1 id="main">
29. 29.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
30. 30.True or false: li is an element selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #top (b) h2 (c) #star (d) li
32. 32.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="hero"> (c) <li class="note"> (d) <h2>
33. 33.True or false: #main is an id selector. (a) False (b) True
34. 34.🎯 Can many elements share the same class? (a) No (b) Yes
35. 35.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
36. 36.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) h2 (b) .box (c) .top (d) #box
38. 38.🎯 Which element does the selector #end style? (a) <div class="big"> (b) <li id="hero"> (c) <li class="end"> (d) <li id="end">
39. 39.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) h1 (c) p (d) .box

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