CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 356 · 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 #intro style? (a) <h1 class="big"> (b) <p id="main"> (c) <p id="intro"> (d) <p class="intro">
3. 3.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
4. 4.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="box"> (c) <div class="star"> (d) <div id="box">
5. 5.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="hero"> (c) <li class="star"> (d) <h1 class="star">
6. 6.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <div class="red"> (d) <span class="star">
7. 7.🎯 Which CSS selector matches this element?
   <div class="menu" id="top">Hello</div> (a) #intro (b) #menu (c) .top (d) .menu
8. 8.True or false: #end is an element selector. (a) False (b) True
9. 9.🎯 Which element does the selector #top style? (a) <h1 class="menu"> (b) <p id="intro"> (c) <p id="top"> (d) <p class="top">
10. 10.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #end (b) .logo (c) span (d) div
11. 11.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .note (b) #logo (c) .main (d) .menu
12. 12.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
13. 13.True or false: p is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) #intro (b) #top (c) .menu (d) #star
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
17. 17.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
18. 18.True or false: #logo is an id selector. (a) True (b) False
19. 19.True or false: #logo is an element selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .menu (b) .logo (c) #end (d) span
21. 21.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .main (b) p (c) #menu (d) span
23. 23.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <span class="note"> (c) <p class="big"> (d) <span class="menu">
24. 24.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) .logo (b) div (c) span (d) #end
26. 26.True or false: .big is a class selector. (a) False (b) True
27. 27.True or false: #end is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #box (b) .star (c) .main (d) #main
29. 29.True or false: .note is an element selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) h1 (b) #box (c) #top (d) .top
31. 31.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .end (b) #hero (c) #big (d) #end
33. 33.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <p class="star"> (d) <h2 class="star">
34. 34.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <li class="note"> (d) <h1 class="note">
35. 35.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="box"> (c) <span id="box"> (d) <span class="star">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .menu (b) .intro (c) #main (d) #menu
37. 37.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <p class="big"> (d) <li id="hero">
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) div (b) .end (c) #end (d) #hero
39. 39.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="red"> (c) <span class="logo"> (d) <span id="logo">
40. 40.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector

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