CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 268 · 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.True or false: #logo is a class selector. (a) True (b) False
2. 2.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
3. 3.🎯 Which CSS selector matches this element?
   <li class="red" id="end">Hello</li> (a) li (b) #hero (c) .end (d) #red
4. 4.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <div class="big"> (c) <li id="top"> (d) <li class="top">
5. 5.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
6. 6.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="end">Hello</h2> (a) #note (b) #hero (c) .note (d) .end
10. 10.🎯 Which element does the selector #top style? (a) <p class="box"> (b) <span id="intro"> (c) <span class="top"> (d) <span id="top">
11. 11.True or false: .card is an id selector. (a) False (b) True
12. 12.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li id="menu"> (c) <li class="menu"> (d) <li class="note">
13. 13.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
14. 14.True or false: .big is a class selector. (a) False (b) True
15. 15.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <span class="box"> (c) <p class="menu"> (d) <span class="star">
16. 16.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h2 class="note"> (c) <h1 class="star"> (d) <h1 id="star">
18. 18.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <li> (d) <span id="main">
19. 19.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) #star (b) #logo (c) .menu (d) span
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .box (b) li (c) #box (d) .star
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #intro (b) #main (c) .intro (d) span
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) .star (b) #box (c) #hero (d) h1
24. 24.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="note"> (c) <span class="note"> (d) <h2 id="top">
25. 25.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) p (b) #menu (c) .note (d) .main
26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) span (b) .star (c) .menu (d) #end
27. 27.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .red (b) #top (c) span (d) #big
28. 28.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <span class="star"> (c) <div class="red"> (d) <div id="red">
29. 29.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
30. 30.True or false: #top is an id selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) .logo (b) #logo (c) .menu (d) #star
32. 32.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) #red (c) #hero (d) #top
33. 33.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) #top (b) .menu (c) #intro (d) .top
34. 34.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <h2 id="intro"> (c) <span class="star"> (d) <p>
35. 35.True or false: h1 is an id selector. (a) False (b) True
36. 36.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
37. 37.True or false: .note is an element selector. (a) True (b) False
38. 38.True or false: p is a class selector. (a) False (b) True
39. 39.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <div id="box"> (c) <div class="star"> (d) <span class="menu">
40. 40.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .box (b) .star (c) .intro (d) h1

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