CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 113 · 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 p? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
5. 5.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
6. 6.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
7. 7.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
8. 8.True or false: .star is a class selector. (a) False (b) True
9. 9.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <h1 class="star"> (c) <p id="main"> (d) <p class="main">
10. 10.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector #end style? (a) <h2 class="red"> (b) <h1 id="end"> (c) <h1 id="hero"> (d) <h1 class="end">
12. 12.True or false: img is an id selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #top (b) .top (c) .big (d) div
14. 14.True or false: .big is an element selector. (a) False (b) True
15. 15.True or false: .menu is an id selector. (a) False (b) True
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) #hero (b) .end (c) #big (d) #end
17. 17.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <li class="menu"> (c) <h2 class="box"> (d) <h2 class="star">
18. 18.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) #big (b) span (c) div (d) #hero
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) .red (c) li (d) #logo
20. 20.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) .hero (c) .note (d) p
22. 22.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <li> (c) <h2 class="menu"> (d) <div class="menu">
23. 23.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) h1 (b) #main (c) #intro (d) .big
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) .box (c) #end (d) li
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #main (b) #logo (c) #red (d) .box
27. 27.🎯 Which element does the selector #logo style? (a) <div id="logo"> (b) <div class="logo"> (c) <span class="menu"> (d) <div id="end">
28. 28.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <div class="menu"> (c) <li class="end"> (d) <li id="end">
29. 29.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .box (b) .top (c) p (d) .star
32. 32.True or false: li is an element selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .intro (b) .star (c) #main (d) #star
34. 34.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div class="big"> (c) <span class="box"> (d) <div id="big">
35. 35.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <div class="note"> (d) <span id="main">
36. 36.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) div (b) #big (c) .main (d) .big
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <li class="red"> (c) <div class="box"> (d) <li id="big">
39. 39.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
40. 40.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector

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