CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 407 · 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 .note? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: body is an id selector. (a) True (b) False
3. 3.True or false: .star is an id selector. (a) True (b) False
4. 4.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <p class="big"> (c) <h1> (d) <li id="end">
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.True or false: .card is an element selector. (a) False (b) True
7. 7.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
8. 8.🎯 Which CSS selector matches this element?
   <li class="note" id="logo">Hello</li> (a) .big (b) .note (c) #end (d) #note
9. 9.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="menu"> (c) <span class="note"> (d) <span id="menu">
11. 11.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
12. 12.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <li id="intro"> (c) <div class="box"> (d) <li class="intro">
13. 13.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
14. 14.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <h2 id="big">
15. 15.True or false: .card is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .main (b) #main (c) .red (d) #logo
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .red (b) li (c) #main (d) .big
18. 18.True or false: h1 is an element selector. (a) False (b) True
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) .logo (b) #red (c) div (d) span
21. 21.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) li (b) #big (c) .red (d) #end
22. 22.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
23. 23.True or false: li is an id selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .box (b) #top (c) h1 (d) .red
25. 25.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p class="star"> (d) <p id="star">
26. 26.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) .box (b) p (c) #red (d) .end
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) li (b) #box (c) #main (d) h2
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) #hero (b) #big (c) #end (d) span
29. 29.True or false: .note is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) li (b) #note (c) h2 (d) .big
31. 31.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
32. 32.True or false: #hero is an element selector. (a) False (b) True
33. 33.True or false: img is an element selector. (a) True (b) False
34. 34.True or false: #top is an id selector. (a) True (b) False
35. 35.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="top"> (c) <h2> (d) <li class="note">
37. 37.True or false: p is an element selector. (a) True (b) False
38. 38.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <h1 class="big"> (c) <p id="logo"> (d) <p class="logo">
40. 40.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector

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