CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 947 · 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 div style? (a) <span> (b) <div class="menu"> (c) <p class="menu"> (d) <h1 id="hero">
2. 2.True or false: #top is a class selector. (a) True (b) False
3. 3.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) .menu (b) .main (c) #main (d) #star
5. 5.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) #star (b) .star (c) .menu (d) #top
6. 6.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h2 class="menu"> (c) <h1 class="hero"> (d) <h1 id="top">
7. 7.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
8. 8.True or false: .big is a class selector. (a) False (b) True
9. 9.True or false: #end is an element selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) .box (c) #end (d) h1
11. 11.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) p (b) #main (c) #box (d) span
12. 12.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector .box style? (a) <div id="box"> (b) <span class="menu"> (c) <div class="box"> (d) <div class="star">
14. 14.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <li class="big"> (c) <h2 class="menu"> (d) <h2 class="note">
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .top (b) .star (c) #intro (d) .menu
18. 18.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
19. 19.True or false: img is an element selector. (a) False (b) True
20. 20.True or false: .note is a class selector. (a) True (b) False
21. 21.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <div id="end"> (d) <span class="red">
22. 22.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 class="red"> (c) <h2 class="box"> (d) <h1 id="big">
23. 23.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <h1 class="box"> (c) <p class="red"> (d) <p id="big">
25. 25.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) #main (c) .menu (d) .note
28. 28.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="box"> (c) <p class="box"> (d) <h1>
29. 29.True or false: img is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #note (b) #end (c) div (d) span
31. 31.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <p class="menu"> (c) <span class="star"> (d) <span class="box">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) .red (b) .hero (c) #top (d) .big
33. 33.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p class="box"> (c) <p class="red"> (d) <p id="red">
34. 34.True or false: .card is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) h1 (b) #intro (c) .top (d) #box
36. 36.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <h1 class="note"> (c) <p id="main"> (d) <p class="intro">
37. 37.True or false: body is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) div (c) .star (d) #box
39. 39.True or false: #logo is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="star"> (c) <h1 id="star"> (d) <h1 class="menu">

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