CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 299 · 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.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="note" id="top">Hello</li> (a) #intro (b) li (c) div (d) .big
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="red" id="logo">Hello</h1> (a) #logo (b) #end (c) #red (d) .box
4. 4.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <p class="end"> (c) <h1 class="star"> (d) <p id="hero">
5. 5.True or false: .menu is a class selector. (a) False (b) True
6. 6.🎯 Can many elements share the same class? (a) Yes (b) No
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
8. 8.True or false: .star is an id selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) #red (b) .box (c) #end (d) #logo
10. 10.🎯 Which element does the selector span style? (a) <h1 class="menu"> (b) <h2 id="intro"> (c) <p> (d) <span class="menu">
11. 11.True or false: body is an element selector. (a) False (b) True
12. 12.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="big"> (c) <h2 class="red"> (d) <h1 class="note">
13. 13.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <p class="red"> (c) <span class="big"> (d) <span class="note">
14. 14.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <span id="intro"> (c) <span id="main"> (d) <p class="big">
15. 15.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 id="menu"> (d) <h2 class="menu">
16. 16.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #top (b) .box (c) .top (d) h1
17. 17.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="big"> (c) <span class="logo"> (d) <span id="logo">
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .box (b) #box (c) #end (d) .logo
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) #logo (b) #star (c) h2 (d) #end
20. 20.True or false: li is an element selector. (a) False (b) True
21. 21.True or false: #logo is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
24. 24.True or false: .note is an id selector. (a) True (b) False
25. 25.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
26. 26.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
27. 27.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
30. 30.True or false: #end is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <div id="top"> (c) <h2> (d) <li class="box">
32. 32.True or false: h1 is a class selector. (a) True (b) False
33. 33.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
35. 35.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <p class="menu"> (d) <h2 class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #red (b) #intro (c) p (d) .box
37. 37.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
39. 39.True or false: h1 is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) .hero (b) p (c) h1 (d) #menu

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