CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 465 · 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?
   <p class="star" id="top">Hello</p> (a) p (b) .menu (c) .top (d) #star
2. 2.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
4. 4.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) .big (b) .red (c) #end (d) .logo
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="logo">Hello</p> (a) h1 (b) #note (c) #logo (d) #end
8. 8.🎯 Which element does the selector #main style? (a) <p class="star"> (b) <span id="main"> (c) <span class="main"> (d) <span id="logo">
9. 9.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
10. 10.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) h2 (b) #note (c) h1 (d) #intro
12. 12.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
14. 14.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span id="main"> (c) <span class="intro"> (d) <p class="note">
15. 15.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #main (b) .intro (c) #intro (d) #big
16. 16.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #logo (b) #star (c) .menu (d) #main
17. 17.True or false: .card is an element selector. (a) False (b) True
18. 18.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <h2 class="box"> (d) <div class="box">
19. 19.True or false: h1 is a class selector. (a) True (b) False
20. 20.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <h2 id="note">
21. 21.True or false: .star is a class selector. (a) False (b) True
22. 22.True or false: .note is a class selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #top (b) .menu (c) #menu (d) .hero
24. 24.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) h2 (b) .top (c) #intro (d) #top
26. 26.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #main (b) .menu (c) p (d) .intro
27. 27.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 class="note"> (c) <h1 id="note"> (d) <h2 class="red">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .logo (b) #end (c) li (d) h2
29. 29.True or false: .menu is a class selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .box (b) #red (c) span (d) .red
31. 31.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) .box (c) #box (d) .star
32. 32.🎯 Can many elements share the same class? (a) No (b) Yes
33. 33.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
34. 34.True or false: img is a class selector. (a) False (b) True
35. 35.🎯 Which element does the selector div style? (a) <span> (b) <p class="star"> (c) <h1 id="top"> (d) <div class="star">
36. 36.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li id="star"> (c) <li class="menu"> (d) <li class="star">
37. 37.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .star (b) .logo (c) #logo (d) #box
39. 39.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <h2 id="logo"> (c) <p> (d) <span class="star">
40. 40.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) p (b) #logo (c) .main (d) h1

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