CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 783 · 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?
   <div class="box" id="end">Hello</div> (a) div (b) #hero (c) .star (d) #box
2. 2.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) #main (b) div (c) .red (d) span
3. 3.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) p (b) #red (c) .box (d) h1
5. 5.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <p class="main"> (c) <p id="logo"> (d) <h1 class="menu">
7. 7.🎯 Which element does the selector li style? (a) <span class="star"> (b) <div> (c) <li class="star"> (d) <p id="main">
8. 8.True or false: body is a class selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) .red (b) #intro (c) .box (d) .top
10. 10.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
11. 11.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
13. 13.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .hero (b) #red (c) #top (d) #hero
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #hero (b) #big (c) .big (d) .red
15. 15.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) .end (b) span (c) #end (d) #hero
16. 16.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) p (b) #intro (c) span (d) .top
17. 17.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #star (b) .top (c) span (d) p
18. 18.True or false: #end is a class selector. (a) False (b) True
19. 19.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
20. 20.True or false: #main is an id selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) div (b) #end (c) #hero (d) .end
22. 22.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
23. 23.True or false: .menu is an element selector. (a) False (b) True
24. 24.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <li class="menu"> (c) <h1 class="menu"> (d) <h2>
25. 25.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #big (b) .big (c) .red (d) .main
27. 27.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h1 id="box"> (c) <h1 class="star"> (d) <h2 class="menu">
28. 28.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="box"> (c) <li id="hero"> (d) <p class="box">
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) #main (c) p (d) .box
30. 30.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <div class="end"> (d) <span class="star">
31. 31.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
32. 32.True or false: li is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) .intro (b) #red (c) .box (d) h1
34. 34.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) .big (b) .main (c) #note (d) #main
35. 35.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <h2 id="top"> (c) <p> (d) <span class="star">
36. 36.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
37. 37.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <li class="star"> (c) <h2 id="hero"> (d) <h2 id="top">
38. 38.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p id="menu"> (c) <h1 class="big"> (d) <p class="menu">
40. 40.🎯 Can many elements share the same class? (a) Yes (b) No

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