CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 769 · 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 h1? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
5. 5.True or false: .star is an id selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="star" id="hero">Hello</h2> (a) .hero (b) #hero (c) .menu (d) li
7. 7.True or false: #logo is a class selector. (a) False (b) True
8. 8.True or false: img is an id selector. (a) False (b) True
9. 9.True or false: #end is a class selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #intro (b) .star (c) #box (d) p
11. 11.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
12. 12.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div class="menu"> (c) <div class="star"> (d) <div id="star">
13. 13.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <h1 class="note"> (c) <p id="logo"> (d) <p id="main">
14. 14.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
16. 16.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 class="big"> (d) <h2 id="note">
17. 17.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) div (b) .intro (c) #main (d) span
18. 18.True or false: #main is an element selector. (a) False (b) True
19. 19.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
20. 20.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="star"> (c) <h2 class="menu"> (d) <h1 class="box">
22. 22.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <li id="top"> (d) <p class="menu">
23. 23.🎯 Which element does the selector .box style? (a) <li class="star"> (b) <li id="box"> (c) <li class="box"> (d) <div class="menu">
24. 24.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <div class="note"> (d) <li id="end">
25. 25.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) .intro (b) li (c) #main (d) div
26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #big (b) .red (c) #logo (d) .logo
27. 27.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #end (b) #hero (c) .end (d) h1
28. 28.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
29. 29.True or false: .big is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector #end style? (a) <p class="box"> (b) <span class="end"> (c) <span id="end"> (d) <span id="hero">
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) .intro (b) #red (c) li (d) #intro
32. 32.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: body is an element selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) #menu (b) li (c) .intro (d) #main
35. 35.True or false: h1 is an element selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #logo (b) .main (c) #big (d) .big
37. 37.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h1 id="logo"> (d) <h2 class="box">
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) li (b) #hero (c) .box (d) .end
39. 39.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="box"> (d) <h2 id="logo">
40. 40.True or false: #end is an id selector. (a) True (b) False

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