CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 290 · 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 .note? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) .red (b) #logo (c) #main (d) #big
3. 3.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div id="star"> (c) <div class="star"> (d) <div class="menu">
4. 4.🎯 Which CSS selector matches this element?
   <span class="box" id="main">Hello</span> (a) span (b) #box (c) p (d) #logo
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="box" id="main">Hello</h1> (a) .star (b) h1 (c) h2 (d) #box
6. 6.True or false: .star is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
8. 8.True or false: img is an element selector. (a) False (b) True
9. 9.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
10. 10.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span id="star"> (c) <span class="star"> (d) <p class="note">
12. 12.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) div (b) .red (c) .box (d) .end
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .note (b) #intro (c) .big (d) li
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <li class="big"> (c) <h1 class="big"> (d) <h2>
16. 16.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="menu"> (c) <div class="menu"> (d) <span id="main">
17. 17.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <p> (c) <h2 id="top"> (d) <span class="big">
19. 19.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .big (b) #note (c) li (d) .hero
20. 20.True or false: .menu is a class selector. (a) False (b) True
21. 21.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="note">
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) li (b) h2 (c) .main (d) .big
23. 23.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
24. 24.True or false: h1 is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <p id="hero"> (d) <li class="menu">
26. 26.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p class="big"> (c) <h1 class="red"> (d) <p id="note">
27. 27.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <li> (c) <div class="note"> (d) <span id="logo">
28. 28.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <span class="star"> (c) <div id="intro"> (d) <div id="top">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #star (b) h2 (c) .hero (d) li
30. 30.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <span class="red"> (c) <div class="big"> (d) <div id="note">
31. 31.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="red"> (d) <p class="box">
33. 33.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) #hero (c) h2 (d) .red
35. 35.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p id="star"> (c) <p class="menu"> (d) <p class="star">
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #logo (b) .logo (c) #note (d) .big
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) li (b) .note (c) .hero (d) #top
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) h1 (b) #main (c) .intro (d) #red
39. 39.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <h1 class="red"> (d) <p id="top">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) #menu (b) #end (c) .note (d) #logo

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