CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 233 · 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="big" id="end">Hello</p> (a) #end (b) .end (c) #big (d) h1
2. 2.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
3. 3.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <div class="red"> (c) <span> (d) <p class="red">
5. 5.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="red" id="top">Hello</h2> (a) li (b) #top (c) .box (d) .top
7. 7.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <li> (c) <div class="note"> (d) <span id="end">
9. 9.True or false: body is an element selector. (a) False (b) True
10. 10.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
11. 11.True or false: img is an element selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #main (b) .big (c) .intro (d) #big
13. 13.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
14. 14.True or false: img is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <li> (c) <div class="big"> (d) <span id="end">
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .note (b) .hero (c) #top (d) .big
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) #star (b) .logo (c) .menu (d) p
18. 18.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
19. 19.True or false: .big is an element selector. (a) True (b) False
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.True or false: #hero is an id selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) .end (b) #end (c) #big (d) h2
23. 23.True or false: p is an element selector. (a) True (b) False
24. 24.True or false: #hero is a class selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #note (b) .end (c) .note (d) span
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) .big (c) #end (d) .note
27. 27.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .box (b) #red (c) .red (d) .logo
28. 28.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <li id="main"> (c) <li class="main"> (d) <div class="red">
29. 29.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 id="main"> (c) <h2 class="box"> (d) <h1 class="intro">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) h1 (b) #box (c) h2 (d) #intro
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) #box (b) .hero (c) .star (d) div
32. 32.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #end (b) #box (c) .star (d) .end
34. 34.True or false: p is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #logo (b) .star (c) #star (d) .main
36. 36.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
37. 37.True or false: img is a class selector. (a) True (b) False
38. 38.🎯 Which element does the selector #top style? (a) <span class="note"> (b) <div class="top"> (c) <div id="intro"> (d) <div id="top">
39. 39.True or false: #logo is a class selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #box (b) h1 (c) #logo (d) .logo

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