CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 254 · 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) an id selector (b) an element selector (c) a class selector
2. 2.True or false: h1 is an element selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) div (b) #red (c) .main (d) li
4. 4.🎯 Which CSS selector matches this element?
   <li class="box" id="intro">Hello</li> (a) #box (b) div (c) .box (d) #main
5. 5.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <span class="big"> (c) <li class="big"> (d) <div>
6. 6.🎯 Which CSS selector matches this element?
   <span class="box" id="end">Hello</span> (a) .end (b) span (c) #box (d) p
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) h1 (b) .note (c) #hero (d) #note
8. 8.True or false: img is an id selector. (a) True (b) False
9. 9.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h1> (c) <h2 class="big"> (d) <li id="logo">
11. 11.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p class="box">
12. 12.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="end"> (c) <li class="star"> (d) <div>
13. 13.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #star (b) h1 (c) #main (d) #intro
14. 14.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #top (b) div (c) #hero (d) #star
15. 15.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
16. 16.True or false: #top is an id selector. (a) False (b) True
17. 17.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div class="top"> (c) <div id="intro"> (d) <span class="red">
18. 18.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <p class="star"> (d) <h1 class="note">
19. 19.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <li class="star"> (c) <h2 id="red"> (d) <h2 class="red">
20. 20.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) h1 (b) #red (c) .red (d) .box
21. 21.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
23. 23.🎯 Which element does the selector div style? (a) <div class="red"> (b) <h1 id="hero"> (c) <span> (d) <p class="red">
24. 24.🎯 Can many elements share the same class? (a) Yes (b) No
25. 25.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) .main (b) #main (c) #star (d) #logo
26. 26.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #end (b) .big (c) h1 (d) .end
27. 27.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .top (b) span (c) #intro (d) .big
29. 29.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .box (b) li (c) #red (d) #hero
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) h2 (b) li (c) #intro (d) .top
31. 31.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <p class="menu"> (d) <span id="top">
32. 32.True or false: img is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .main (b) #red (c) p (d) span
34. 34.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
36. 36.True or false: #hero is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #end (b) div (c) #red (d) .end
38. 38.True or false: .note is a class selector. (a) True (b) False
39. 39.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
40. 40.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h1 class="note"> (c) <h2 id="hero"> (d) <p>

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