CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 699 · 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="big" id="hero">Hello</div> (a) span (b) div (c) #top (d) .hero
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) .main (b) .menu (c) #star (d) .star
3. 3.🎯 Which CSS selector matches this element?
   <div class="box" id="logo">Hello</div> (a) #box (b) div (c) span (d) .star
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
5. 5.🎯 Which element does the selector #main style? (a) <h1 class="note"> (b) <p class="main"> (c) <p id="logo"> (d) <p id="main">
6. 6.True or false: #hero is an id selector. (a) True (b) False
7. 7.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <h1 class="star"> (d) <p id="top">
8. 8.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) span (b) .red (c) #big (d) .intro
9. 9.True or false: .card is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li id="box"> (c) <li class="star"> (d) <li class="box">
12. 12.True or false: h1 is an id selector. (a) True (b) False
13. 13.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <div class="menu"> (d) <h2 class="menu">
14. 14.True or false: #main is a class selector. (a) True (b) False
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) .hero (b) div (c) .star (d) .menu
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .intro (b) #note (c) div (d) .big
18. 18.True or false: #end is a class selector. (a) True (b) False
19. 19.True or false: .card is an id selector. (a) False (b) True
20. 20.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
21. 21.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <div class="box"> (c) <li> (d) <span id="top">
23. 23.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) .star (b) h1 (c) #box (d) .hero
25. 25.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .big (b) .hero (c) .note (d) #top
26. 26.True or false: body is an id selector. (a) True (b) False
27. 27.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="hero"> (c) <div class="red"> (d) <h2 class="red">
29. 29.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
30. 30.True or false: p is an element selector. (a) False (b) True
31. 31.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) p (b) #intro (c) .top (d) .note
33. 33.True or false: .menu is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .intro (b) #big (c) .big (d) #main
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .red (b) #end (c) li (d) .big
36. 36.True or false: .star is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) h2 (b) #menu (c) #logo (d) .logo
38. 38.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
39. 39.True or false: p is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .red (b) p (c) .box (d) #logo

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