CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 66 · 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 element does the selector #hero style? (a) <div id="top"> (b) <div class="hero"> (c) <span class="box"> (d) <div id="hero">
2. 2.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
3. 3.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: .big is an id selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) li (b) #intro (c) .box (d) .star
7. 7.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <h1 class="note"> (d) <p class="logo">
8. 8.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <div class="note"> (c) <li id="logo"> (d) <li id="main">
9. 9.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) .red (b) #intro (c) #main (d) .intro
10. 10.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #intro (b) .top (c) #red (d) .red
11. 11.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h1 id="main"> (d) <h2 class="big">
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) span (c) .box (d) .hero
13. 13.True or false: .card is a class selector. (a) False (b) True
14. 14.🎯 Which element does the selector p style? (a) <h1> (b) <li id="logo"> (c) <p class="star"> (d) <h2 class="star">
15. 15.True or false: #end is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="intro"> (c) <h1 class="note"> (d) <p id="main">
17. 17.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) span (b) #end (c) .logo (d) .box
18. 18.True or false: .star 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 CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) .red (b) #red (c) #main (d) .intro
21. 21.True or false: #top is an id selector. (a) False (b) True
22. 22.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="end"> (c) <div id="hero"> (d) <span class="menu">
23. 23.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="box"> (c) <div class="red"> (d) <div id="red">
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) .hero (b) li (c) h2 (d) #note
25. 25.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 id="menu"> (d) <h1 class="menu">
26. 26.True or false: .menu is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <p class="note"> (c) <span class="star"> (d) <span class="menu">
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #end (b) div (c) .logo (d) .star
29. 29.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
30. 30.True or false: .star is an element selector. (a) True (b) False
31. 31.True or false: h1 is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .menu (b) #star (c) span (d) #main
33. 33.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <p id="main"> (d) <li class="menu">
34. 34.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <div id="top"> (c) <div class="top"> (d) <span class="note">
35. 35.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #intro (b) .box (c) h1 (d) p
38. 38.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="menu"> (c) <li id="logo"> (d) <p class="menu">
39. 39.🎯 Which element does the selector .red style? (a) <div class="star"> (b) <li class="red"> (c) <li id="red"> (d) <li class="box">
40. 40.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2

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