CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 779 · 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.True or false: .big is a class selector. (a) True (b) False
2. 2.True or false: #hero is an element selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <span class="menu" id="end">Hello</span> (a) #end (b) #hero (c) p (d) #menu
4. 4.True or false: .note is a class selector. (a) False (b) True
5. 5.🎯 Which element does the selector .menu style? (a) <h1 class="menu"> (b) <h1 class="note"> (c) <h2 class="big"> (d) <h1 id="menu">
6. 6.True or false: #main is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) li (b) .top (c) .box (d) #intro
8. 8.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) h2 (b) #main (c) #logo (d) #big
11. 11.True or false: .card is an element selector. (a) True (b) False
12. 12.🎯 Which element does the selector #intro style? (a) <li class="red"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <h2 id="main">
13. 13.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) #menu (b) div (c) #intro (d) #main
14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .note (b) #menu (c) #intro (d) span
15. 15.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #big (b) .red (c) .big (d) h1
17. 17.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) #menu (b) li (c) .note (d) .logo
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) #red (b) span (c) .box (d) p
19. 19.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) .big (b) div (c) li (d) #note
21. 21.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #hero (b) .star (c) .hero (d) #box
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) .main (b) .big (c) #big (d) span
25. 25.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="menu"> (d) <span id="logo">
26. 26.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
27. 27.True or false: body is a class selector. (a) True (b) False
28. 28.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
29. 29.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .top (b) div (c) #big (d) li
30. 30.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #note (b) span (c) #main (d) #intro
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) span (b) .note (c) #menu (d) div
32. 32.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #logo (b) .big (c) #note (d) div
33. 33.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
34. 34.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .note (b) .logo (c) #note (d) .big
36. 36.True or false: h1 is an element selector. (a) True (b) False
37. 37.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h2 class="box"> (c) <h1> (d) <p class="box">
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) p (c) h1 (d) .note
39. 39.True or false: #top is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .main (b) #logo (c) span (d) .box

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