CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 588 · 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 .star? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="star" id="end">Hello</span> (a) p (b) #hero (c) .menu (d) #end
3. 3.True or false: #end is an element selector. (a) False (b) True
4. 4.True or false: .big is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="intro">Hello</h2> (a) #intro (b) #main (c) .intro (d) .note
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
7. 7.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) div (b) .top (c) .menu (d) .note
8. 8.True or false: .card is a class selector. (a) False (b) True
9. 9.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #intro (b) p (c) #main (d) #big
12. 12.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
13. 13.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="top"> (c) <div class="big"> (d) <li id="intro">
14. 14.🎯 Which element does the selector #end style? (a) <h1 class="big"> (b) <p class="end"> (c) <p id="hero"> (d) <p id="end">
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #hero (b) span (c) .note (d) div
16. 16.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <span class="box"> (c) <li class="box"> (d) <div>
17. 17.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #end (b) .logo (c) #red (d) .red
18. 18.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) h2 (b) .red (c) .logo (d) #big
22. 22.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .note (b) .main (c) #logo (d) span
24. 24.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) #note (b) .top (c) #intro (d) #top
25. 25.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="menu"> (c) <h1 class="menu"> (d) <h2>
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h2 (b) #logo (c) .box (d) .logo
27. 27.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <li class="star"> (d) <div id="end">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #main (b) .intro (c) li (d) h2
29. 29.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #big (b) .hero (c) .big (d) span
30. 30.True or false: .big is an element selector. (a) True (b) False
31. 31.True or false: .card is an element selector. (a) False (b) True
32. 32.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Can many elements share the same class? (a) Yes (b) No
34. 34.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
35. 35.True or false: #top is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) div (b) li (c) #box (d) #end
37. 37.True or false: img is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) #menu (c) .top (d) .menu
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .note (b) #note (c) .big (d) h2
40. 40.True or false: h1 is an element selector. (a) False (b) True

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