CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 250 · 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 li style? (a) <div> (b) <span class="star"> (c) <p id="top"> (d) <li class="star">
2. 2.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
3. 3.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
4. 4.True or false: .menu is an id selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) .red (b) p (c) #big (d) span
6. 6.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) #intro (b) #note (c) p (d) h1
9. 9.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <h2 class="menu"> (c) <h1> (d) <li id="intro">
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .red (b) #red (c) #end (d) li
11. 11.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) span (b) .logo (c) #star (d) #logo
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <p id="main"> (d) <h1 class="red">
14. 14.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
15. 15.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
16. 16.True or false: img is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="star"> (c) <div class="menu"> (d) <span class="note">
18. 18.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <li id="top"> (c) <h1> (d) <p class="box">
19. 19.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .red (b) .big (c) #big (d) span
20. 20.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #top (b) #red (c) .hero (d) #hero
23. 23.True or false: .note is an id selector. (a) True (b) False
24. 24.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <li id="main"> (c) <div class="note"> (d) <li class="main">
25. 25.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #intro (b) .intro (c) .star (d) #box
26. 26.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) p (b) .box (c) h1 (d) #logo
28. 28.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
29. 29.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) p (b) #logo (c) #menu (d) .main
31. 31.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #top (b) .hero (c) h1 (d) p
32. 32.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <li class="big"> (c) <h1 class="big"> (d) <h2>
33. 33.True or false: .card is a class selector. (a) True (b) False
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 #intro style? (a) <span id="intro"> (b) <span id="main"> (c) <p class="red"> (d) <span class="intro">
36. 36.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h2 id="top"> (c) <h1 class="big"> (d) <p>
37. 37.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h2 class="star">
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .menu (b) h1 (c) .note (d) #main
39. 39.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="big"> (c) <li id="big"> (d) <li class="red">
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .big (b) #logo (c) p (d) .note

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