CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 307 · 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 #main? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
3. 3.True or false: body is an id selector. (a) True (b) False
4. 4.True or false: .menu is a class selector. (a) True (b) False
5. 5.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.True or false: #logo is an element selector. (a) True (b) False
8. 8.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
9. 9.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 class="red"> (c) <h1 id="big"> (d) <h2 class="box">
10. 10.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #note (b) #top (c) li (d) .big
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #star (b) #hero (c) .star (d) .end
12. 12.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) #top (c) span (d) .top
13. 13.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <p class="logo"> (d) <h1 class="menu">
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) h1 (b) h2 (c) #intro (d) .top
16. 16.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <div class="note"> (c) <span> (d) <p class="note">
17. 17.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 class="box"> (c) <h1 class="star"> (d) <h1 id="box">
18. 18.True or false: h1 is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <li class="red"> (c) <h2 id="intro"> (d) <h2 id="top">
20. 20.🎯 Which element does the selector p style? (a) <h1> (b) <li id="end"> (c) <h2 class="box"> (d) <p class="box">
21. 21.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .red (b) h1 (c) .end (d) #end
22. 22.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <div class="big"> (c) <div id="note"> (d) <span class="red">
23. 23.True or false: img is an element selector. (a) False (b) True
24. 24.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
26. 26.True or false: .card is an id selector. (a) True (b) False
27. 27.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <li id="red"> (c) <li class="box"> (d) <div class="star">
29. 29.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <p class="menu"> (c) <h1 class="big"> (d) <p class="note">
30. 30.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <div class="menu"> (c) <li> (d) <h2 class="menu">
31. 31.True or false: #top is an element selector. (a) True (b) False
32. 32.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: .big is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector .menu style? (a) <h1 class="menu"> (b) <h1 id="menu"> (c) <h2 class="big"> (d) <h1 class="note">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) li (c) .menu (d) #menu
36. 36.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) #end (b) .logo (c) .menu (d) #logo
37. 37.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) h1 (b) #box (c) p (d) .hero
38. 38.True or false: #top is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="big"> (d) <li class="big">
40. 40.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector

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