CSS Worksheet: Selectors Class and Id

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

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