CSS Worksheet: Selectors Class and Id

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

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