CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 108 · 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 .menu? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
3. 3.🎯 Which CSS selector matches this element?
   <li class="note" id="logo">Hello</li> (a) #note (b) #logo (c) .logo (d) div
4. 4.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
5. 5.True or false: li is an element selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <li class="box" id="intro">Hello</li> (a) #box (b) div (c) .intro (d) .box
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
8. 8.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which element does the selector li style? (a) <span class="big"> (b) <li class="big"> (c) <p id="logo"> (d) <div>
10. 10.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which element does the selector #logo style? (a) <div class="logo"> (b) <div id="logo"> (c) <div id="end"> (d) <span class="note">
13. 13.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) div (b) #top (c) .note (d) .menu
14. 14.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) #big (b) #top (c) #intro (d) p
15. 15.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #top (b) .top (c) #intro (d) .menu
17. 17.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .box (b) #end (c) div (d) li
18. 18.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <li class="star"> (c) <h2 id="main"> (d) <h2 class="main">
19. 19.🎯 Can many elements share the same class? (a) No (b) Yes
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) .box (b) .top (c) div (d) #intro
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) .box (c) p (d) .intro
22. 22.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .star (b) .top (c) #top (d) h1
25. 25.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) span (b) #end (c) .logo (d) .big
26. 26.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
27. 27.True or false: .star is an element selector. (a) False (b) True
28. 28.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="note"> (c) <h1 class="menu"> (d) <h2 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #menu (b) #end (c) div (d) .end
31. 31.🎯 Which element does the selector #top style? (a) <li class="menu"> (b) <h2 class="top"> (c) <h2 id="top"> (d) <h2 id="intro">
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .box (b) #red (c) #intro (d) .red
33. 33.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="box"> (c) <li id="top"> (d) <li id="intro">
34. 34.True or false: .card is a class selector. (a) True (b) False
35. 35.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
36. 36.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <li class="menu"> (c) <p id="hero"> (d) <div>
37. 37.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
38. 38.True or false: #end is an id selector. (a) False (b) True
39. 39.True or false: .menu is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="note"> (c) <h1 class="note"> (d) <div id="main">

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