CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 456 · 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: .star is a class selector. (a) True (b) False
2. 2.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="intro"> (c) <li class="star"> (d) <div>
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="note" id="logo">Hello</h2> (a) #note (b) #end (c) .logo (d) #logo
7. 7.🎯 Which CSS selector matches this element?
   <span class="big" id="logo">Hello</span> (a) #big (b) #end (c) p (d) span
8. 8.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <li class="box" id="main">Hello</li> (a) div (b) .box (c) #logo (d) .star
10. 10.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 id="big"> (c) <h1 class="big"> (d) <h1 class="red">
11. 11.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="star"> (c) <h2 id="main"> (d) <h2 id="intro">
12. 12.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="intro"> (c) <h2 class="star"> (d) <h1 id="main">
13. 13.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
14. 14.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which element does the selector div style? (a) <p class="big"> (b) <span> (c) <h1 id="top"> (d) <div class="big">
16. 16.True or false: #main is an id selector. (a) True (b) False
17. 17.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
18. 18.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #main (b) #menu (c) .intro (d) h1
20. 20.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
21. 21.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) h2 (b) #big (c) .logo (d) h1
23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .red (b) #big (c) .top (d) .big
24. 24.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #menu (b) .main (c) h1 (d) .menu
25. 25.🎯 Which element does the selector h2 style? (a) <span id="main"> (b) <div class="star"> (c) <li> (d) <h2 class="star">
26. 26.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <li class="menu"> (d) <p id="top">
27. 27.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
28. 28.True or false: .big is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) div (b) #star (c) #top (d) #hero
30. 30.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="hero"> (c) <h2> (d) <h1 class="star">
31. 31.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #logo (b) .note (c) .menu (d) p
32. 32.🎯 Which element does the selector li style? (a) <div> (b) <p id="intro"> (c) <span class="box"> (d) <li class="box">
33. 33.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #main (b) .main (c) h1 (d) #red
35. 35.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <p class="big"> (c) <h2 class="big"> (d) <h1>
36. 36.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <h2 class="red"> (d) <p class="red">
37. 37.True or false: p is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #big (b) .red (c) #main (d) div
39. 39.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
40. 40.True or false: .note is a class selector. (a) False (b) True

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