CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 191 · 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.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
2. 2.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <div class="top"> (c) <div id="top"> (d) <span class="big">
3. 3.True or false: .note is a class selector. (a) False (b) True
4. 4.True or false: #hero is an element selector. (a) False (b) True
5. 5.🎯 Which element does the selector #end style? (a) <div class="menu"> (b) <li id="end"> (c) <li id="hero"> (d) <li class="end">
6. 6.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
7. 7.True or false: #top is an id selector. (a) True (b) False
8. 8.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <p id="hero"> (c) <h1 class="red"> (d) <p class="end">
9. 9.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) div (b) .main (c) .red (d) #logo
10. 10.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) .box (b) #red (c) span (d) #logo
11. 11.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 Which element does the selector li style? (a) <div> (b) <li class="box"> (c) <span class="box"> (d) <p id="hero">
14. 14.True or false: #main is an id selector. (a) True (b) False
15. 15.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <li class="big"> (d) <p id="end">
16. 16.True or false: p is a class selector. (a) True (b) False
17. 17.🎯 Which element does the selector #top style? (a) <h2 class="note"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h1 class="top">
18. 18.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <h1 class="note"> (d) <div id="hero">
19. 19.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) #hero (b) #star (c) .menu (d) #end
21. 21.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
22. 22.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
23. 23.True or false: li is an id selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #note (b) h2 (c) .end (d) #hero
25. 25.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .note (b) .main (c) h1 (d) #logo
26. 26.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) div (c) #logo (d) li
27. 27.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="end"> (c) <h2 class="big"> (d) <h1 id="logo">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) #end (c) #hero (d) #big
30. 30.True or false: .star is an element selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) .red (b) .hero (c) h2 (d) #top
32. 32.🎯 Which element does the selector #main style? (a) <h2 class="main"> (b) <h2 id="main"> (c) <li class="menu"> (d) <h2 id="logo">
33. 33.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) h1 (b) #top (c) #hero (d) .box
34. 34.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
35. 35.True or false: #main is an element selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .intro (b) #main (c) .box (d) #box
37. 37.True or false: .star is a class selector. (a) True (b) False
38. 38.True or false: #logo is a class selector. (a) True (b) False
39. 39.True or false: h1 is a class selector. (a) True (b) False
40. 40.True or false: img is a class selector. (a) True (b) False

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