CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 159 · 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 img? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) #intro (b) .star (c) .box (d) #box
3. 3.True or false: .star is a class selector. (a) False (b) True
4. 4.True or false: body is a class selector. (a) True (b) False
5. 5.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <li class="box"> (c) <div id="top"> (d) <h2>
7. 7.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="big"> (c) <li class="note"> (d) <div class="red">
8. 8.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="logo">Hello</div> (a) #end (b) .logo (c) #logo (d) span
10. 10.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #end (b) #logo (c) .logo (d) #box
11. 11.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #box (b) .star (c) #main (d) #logo
12. 12.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h1> (c) <h2 class="star"> (d) <p class="star">
13. 13.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #red (b) #intro (c) p (d) span
14. 14.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) .note (b) #note (c) .logo (d) .big
15. 15.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
16. 16.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
18. 18.True or false: p is a class selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) #top (c) #big (d) .big
20. 20.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="box"> (c) <span class="red"> (d) <span id="red">
22. 22.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) #main (c) #intro (d) #red
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) .menu (b) .hero (c) p (d) #menu
25. 25.🎯 Which element does the selector div style? (a) <div class="red"> (b) <p class="red"> (c) <h1 id="main"> (d) <span>
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .menu (b) .note (c) #logo (d) h1
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) #intro (c) h2 (d) #top
29. 29.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #main (b) p (c) .note (d) .intro
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #red (b) .box (c) h2 (d) .red
31. 31.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #star (b) p (c) #top (d) .menu
32. 32.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <li> (c) <div class="red"> (d) <h2 class="red">
33. 33.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .main (b) span (c) #star (d) .menu
34. 34.🎯 Which element does the selector #main style? (a) <p class="menu"> (b) <span class="main"> (c) <span id="logo"> (d) <span id="main">
35. 35.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
36. 36.🎯 Which element does the selector span style? (a) <span class="note"> (b) <p> (c) <h2 id="hero"> (d) <h1 class="note">
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #box (b) #intro (c) .star (d) #top
39. 39.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="intro"> (c) <span> (d) <div class="note">
40. 40.True or false: .card is an id selector. (a) True (b) False

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