CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 57 · 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 sign starts a class selector? (a) . (b) # (c) & (d) @
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="red" id="end">Hello</h2> (a) li (b) h2 (c) #hero (d) .end
3. 3.True or false: body is an id selector. (a) False (b) True
4. 4.True or false: h1 is an id selector. (a) True (b) False
5. 5.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="end">Hello</h1> (a) #end (b) .menu (c) #star (d) #hero
7. 7.🎯 Which CSS selector matches this element?
   <li class="menu" id="intro">Hello</li> (a) .note (b) div (c) li (d) #menu
8. 8.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <li> (c) <h2 class="box"> (d) <span id="intro">
9. 9.🎯 Which element does the selector p style? (a) <h1> (b) <p class="star"> (c) <li id="logo"> (d) <h2 class="star">
10. 10.True or false: .menu is a class selector. (a) False (b) True
11. 11.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
12. 12.True or false: .menu is an id selector. (a) True (b) False
13. 13.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
14. 14.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) #hero (c) .note (d) span
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) h2 (b) .top (c) li (d) #box
18. 18.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which element does the selector #logo style? (a) <span id="logo"> (b) <span id="end"> (c) <p class="star"> (d) <span class="logo">
20. 20.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which element does the selector #logo style? (a) <li id="end"> (b) <div class="star"> (c) <li id="logo"> (d) <li class="logo">
22. 22.True or false: #hero is a class selector. (a) True (b) False
23. 23.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
25. 25.True or false: #hero is an id selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .box (b) #red (c) p (d) #top
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #star (b) .menu (c) .hero (d) #hero
28. 28.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="star"> (c) <h2 class="menu"> (d) <h1 class="box">
30. 30.🎯 Can many elements share the same class? (a) No (b) Yes
31. 31.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <p class="box"> (c) <span id="top"> (d) <span class="top">
32. 32.True or false: img is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) #logo (b) .main (c) h2 (d) #big
34. 34.True or false: .note is a class selector. (a) True (b) False
35. 35.True or false: li is an id selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .star (c) #intro (d) p
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #top (b) #red (c) .box (d) .red
38. 38.🎯 Which element does the selector div style? (a) <div class="big"> (b) <h1 id="hero"> (c) <span> (d) <p class="big">
39. 39.True or false: body is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) #red (b) .box (c) p (d) span

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