CSS Worksheet: Selectors Class and Id

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

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