CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 102 · 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.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="red" id="top">Hello</span> (a) #red (b) #intro (c) .red (d) .box
3. 3.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <div class="menu"> (c) <span> (d) <h1 id="top">
4. 4.True or false: p is an id selector. (a) True (b) False
5. 5.True or false: li is a class selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) .end (b) .box (c) h1 (d) #end
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="hero">Hello</span> (a) #hero (b) .hero (c) #note (d) .big
8. 8.True or false: #top is an element selector. (a) False (b) True
9. 9.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p class="star"> (d) <p id="star">
10. 10.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .menu (b) .star (c) #star (d) p
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) .big (b) li (c) #logo (d) h2
12. 12.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
13. 13.True or false: p is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <li class="red"> (c) <h1 class="red"> (d) <h2>
15. 15.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <li id="end"> (d) <div class="red">
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .menu (b) #star (c) #intro (d) .intro
18. 18.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .intro (b) h2 (c) #star (d) #intro
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #end (b) .red (c) #big (d) h2
21. 21.True or false: #main is an id selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) h2 (b) .intro (c) .note (d) .menu
23. 23.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
24. 24.True or false: p is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector li style? (a) <div> (b) <span class="note"> (c) <p id="end"> (d) <li class="note">
26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .top (b) div (c) .menu (d) span
27. 27.🎯 Can many elements share the same class? (a) No (b) Yes
28. 28.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
29. 29.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <span id="top"> (c) <li> (d) <h2 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) .logo (b) #box (c) .box (d) #end
31. 31.🎯 Which element does the selector #hero style? (a) <div class="big"> (b) <li id="hero"> (c) <li id="top"> (d) <li class="hero">
32. 32.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .hero (b) h1 (c) #hero (d) #note
34. 34.True or false: .card is an element selector. (a) False (b) True
35. 35.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p class="top"> (c) <p id="intro"> (d) <h1 class="big">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) li (b) #red (c) h2 (d) .box
38. 38.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) h2 (b) #top (c) .hero (d) .box
40. 40.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <span id="note"> (d) <p class="red">

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