CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 221 · 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?
   <p class="menu" id="main">Hello</p> (a) .menu (b) .note (c) #menu (d) .main
2. 2.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
4. 4.True or false: li is an element selector. (a) True (b) False
5. 5.True or false: .menu is an id selector. (a) False (b) True
6. 6.True or false: .menu is a class selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <li class="big" id="intro">Hello</li> (a) div (b) .intro (c) .red (d) #intro
8. 8.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <p class="menu"> (c) <span> (d) <h1 id="main">
9. 9.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
12. 12.🎯 Which element does the selector #top style? (a) <div class="red"> (b) <li class="top"> (c) <li id="top"> (d) <li id="intro">
13. 13.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .hero (b) #red (c) div (d) li
15. 15.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
16. 16.True or false: p is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #logo (b) p (c) .note (d) .big
18. 18.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="hero"> (c) <h2> (d) <h1 class="red">
19. 19.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .big (b) .end (c) p (d) span
20. 20.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) .box (b) #red (c) .red (d) #end
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.True or false: .card is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <span class="red"> (c) <p> (d) <h1 class="red">
24. 24.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="box"> (d) <p class="red">
25. 25.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <h1 class="red"> (c) <p id="hero"> (d) <p class="end">
26. 26.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
28. 28.True or false: .card is an element selector. (a) True (b) False
29. 29.True or false: .big is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) h2 (b) .note (c) .intro (d) .menu
31. 31.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .hero (b) .big (c) #top (d) h1
33. 33.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) .end (b) .big (c) div (d) .red
34. 34.True or false: #end is an id selector. (a) True (b) False
35. 35.🎯 Which element does the selector #logo style? (a) <li class="big"> (b) <h2 id="logo"> (c) <h2 id="end"> (d) <h2 class="logo">
36. 36.True or false: .card is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .red (b) #end (c) .logo (d) #logo
38. 38.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #star (b) div (c) .hero (d) #top
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) li (c) #end (d) .box
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) li (b) .menu (c) #end (d) #menu

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