CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 728 · 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="red" id="top">Hello</span> (a) #red (b) p (c) .top (d) #top
2. 2.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <p class="menu"> (c) <div class="menu"> (d) <span>
3. 3.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h1 class="big"> (c) <h2 class="box"> (d) <h1 class="red">
4. 4.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
5. 5.True or false: h1 is an element selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) #red (b) h1 (c) .intro (d) .red
7. 7.True or false: #logo is an id selector. (a) False (b) True
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="box" id="end">Hello</h2> (a) #hero (b) .star (c) .box (d) .end
9. 9.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="box"> (c) <span id="main"> (d) <div class="box">
10. 10.True or false: .big is a class selector. (a) False (b) True
11. 11.True or false: .menu is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) li (b) .star (c) #star (d) .menu
13. 13.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <li class="note"> (c) <h2 id="star"> (d) <h2 class="star">
14. 14.🎯 Which element does the selector #hero style? (a) <h1 class="box"> (b) <p id="hero"> (c) <p class="hero"> (d) <p id="top">
15. 15.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) div (b) #intro (c) .red (d) .top
16. 16.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
17. 17.True or false: .note is an element selector. (a) False (b) True
18. 18.True or false: #top is an id selector. (a) False (b) True
19. 19.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which element does the selector #end style? (a) <h1 class="end"> (b) <h1 id="hero"> (c) <h2 class="star"> (d) <h1 id="end">
22. 22.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h1 class="star"> (c) <h2 class="menu"> (d) <h1 id="box">
23. 23.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <li id="main"> (d) <p class="big">
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #big (b) #hero (c) .hero (d) span
25. 25.True or false: p is an id selector. (a) False (b) True
26. 26.🎯 Can many elements share the same class? (a) No (b) Yes
27. 27.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .box (b) .logo (c) #end (d) span
29. 29.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
30. 30.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <p class="red"> (c) <span class="big"> (d) <span class="note">
33. 33.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) #intro (b) .big (c) .note (d) #note
36. 36.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) #end (b) #logo (c) #menu (d) .logo
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) #box (b) .intro (c) h2 (d) #main
39. 39.True or false: .star is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) #menu (b) p (c) #end (d) .end

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