CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 548 · 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 CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) h2 (b) li (c) .menu (d) .logo
2. 2.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
3. 3.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which CSS selector matches this element?
   <li class="star" id="main">Hello</li> (a) #main (b) #star (c) #logo (d) div
5. 5.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) #main (b) h1 (c) .big (d) .note
8. 8.True or false: #top is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <h2 class="note"> (d) <span id="intro">
10. 10.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) .top (b) span (c) .box (d) #box
11. 11.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <h2> (c) <div id="end"> (d) <li class="star">
13. 13.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <span class="end"> (c) <span id="end"> (d) <p class="star">
14. 14.True or false: #end is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h2 class="star"> (c) <h1 class="red"> (d) <h1 class="box">
16. 16.True or false: #end is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .logo (b) #big (c) h2 (d) #end
18. 18.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h2 class="box"> (d) <h1 id="main">
19. 19.True or false: #logo is a class selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) p (b) #red (c) .red (d) .box
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) span (b) div (c) .red (d) #big
22. 22.True or false: #top is an id selector. (a) False (b) True
23. 23.True or false: .card is an element selector. (a) False (b) True
24. 24.🎯 Can many elements share the same class? (a) No (b) Yes
25. 25.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) #logo (c) #note (d) .note
27. 27.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) .top (b) .big (c) p (d) span
28. 28.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="note"> (c) <p class="note"> (d) <h1>
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) .logo (b) .note (c) .big (d) #end
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) #intro (c) #box (d) .intro
31. 31.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
32. 32.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="red"> (c) <h2 id="logo"> (d) <span class="red">
33. 33.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
34. 34.True or false: .big is a class selector. (a) False (b) True
35. 35.True or false: .note is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .top (b) #intro (c) .red (d) p
37. 37.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h2 class="menu">
40. 40.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h2 class="box"> (c) <h1 class="big"> (d) <h1 class="red">

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