CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 557 · 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 sign starts an id selector? (a) @ (b) . (c) & (d) #
2. 2.True or false: #hero is a class selector. (a) True (b) False
3. 3.True or false: #end is an element selector. (a) False (b) True
4. 4.🎯 Which element does the selector li style? (a) <div> (b) <li class="red"> (c) <p id="hero"> (d) <span class="red">
5. 5.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="star" id="top">Hello</h1> (a) .top (b) #star (c) .menu (d) #top
9. 9.🎯 Which element does the selector #main style? (a) <p class="star"> (b) <span class="main"> (c) <span id="logo"> (d) <span id="main">
10. 10.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p class="red"> (c) <p class="box"> (d) <p id="red">
11. 11.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) span (b) #main (c) #logo (d) .main
12. 12.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .top (b) #star (c) .star (d) .menu
13. 13.🎯 Can many elements share the same class? (a) No (b) Yes
14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) p (b) #logo (c) h1 (d) .box
15. 15.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <h1 class="red"> (c) <p class="end"> (d) <p id="end">
16. 16.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) #big (c) .main (d) .red
17. 17.True or false: #end is a class selector. (a) False (b) True
18. 18.True or false: .star is an element selector. (a) False (b) True
19. 19.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
20. 20.True or false: .note is an element selector. (a) False (b) True
21. 21.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <div class="big"> (d) <span class="box">
22. 22.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p class="note"> (c) <h1 class="red"> (d) <p id="note">
23. 23.True or false: #top is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .star (b) #box (c) span (d) .intro
25. 25.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <h2 class="note"> (d) <p class="note">
26. 26.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .menu (b) .star (c) h2 (d) #logo
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) li (b) #top (c) .menu (d) #intro
29. 29.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <h2> (c) <li class="menu"> (d) <div id="main">
31. 31.🎯 Which element does the selector #logo style? (a) <li id="end"> (b) <li class="logo"> (c) <div class="star"> (d) <li id="logo">
32. 32.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <li class="big"> (d) <h1 class="big">
33. 33.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <h1 class="note"> (c) <p id="star"> (d) <p class="menu">
34. 34.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="intro"> (c) <h2> (d) <h1 class="note">
35. 35.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
36. 36.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <h2 class="note"> (d) <div class="note">
38. 38.True or false: .note is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="top"> (d) <h2 class="big">
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) .note (b) p (c) #note (d) .logo

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