CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 165 · 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.True or false: .card is a class selector. (a) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <li class="box" id="intro">Hello</li> (a) .box (b) #main (c) #box (d) .intro
3. 3.🎯 Which element does the selector div style? (a) <p class="star"> (b) <div class="star"> (c) <span> (d) <h1 id="main">
4. 4.True or false: h1 is a class selector. (a) False (b) True
5. 5.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) .note (b) #logo (c) .main (d) #note
8. 8.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="end">
9. 9.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which element does the selector #intro style? (a) <span class="red"> (b) <div id="main"> (c) <div id="intro"> (d) <div class="intro">
11. 11.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .top (b) #intro (c) .menu (d) #menu
15. 15.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .red (b) .box (c) span (d) #red
16. 16.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="box"> (d) <span class="red">
17. 17.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .note (b) .menu (c) #top (d) span
18. 18.True or false: .menu is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #star (b) .menu (c) h1 (d) h2
20. 20.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
21. 21.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
22. 22.True or false: .star is a class selector. (a) False (b) True
23. 23.🎯 Which element does the selector #main style? (a) <span class="note"> (b) <div id="logo"> (c) <div id="main"> (d) <div class="main">
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #menu (b) #end (c) #logo (d) .note
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #intro (b) .top (c) .star (d) #star
26. 26.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: #logo is an id selector. (a) False (b) True
28. 28.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <li class="box"> (c) <h1 class="box"> (d) <h2>
31. 31.True or false: .menu is an element selector. (a) False (b) True
32. 32.True or false: .card is an element selector. (a) True (b) False
33. 33.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #top (b) #red (c) li (d) .hero
35. 35.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <p class="box"> (c) <li id="hero"> (d) <h1>
36. 36.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
37. 37.True or false: .note is an id selector. (a) False (b) True
38. 38.True or false: p is an element selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #intro (b) h1 (c) .menu (d) p
40. 40.True or false: #top is a class selector. (a) True (b) False

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