CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 643 · 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.True or false: #hero is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) #intro (b) div (c) .star (d) #box
5. 5.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
6. 6.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h1 id="logo"> (d) <h2 class="note">
8. 8.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
9. 9.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <li class="box"> (d) <div class="star">
10. 10.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .big (b) #logo (c) div (d) #big
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) .box (c) li (d) #box
13. 13.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
14. 14.True or false: p is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) p (b) #end (c) #logo (d) .logo
16. 16.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <li> (c) <span id="end"> (d) <h2 class="red">
18. 18.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) #main (c) #intro (d) .intro
20. 20.True or false: #top is an element selector. (a) False (b) True
21. 21.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Can many elements share the same class? (a) Yes (b) No
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #logo (b) #menu (c) li (d) .menu
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) #main (c) #note (d) h2
26. 26.True or false: .menu is an id selector. (a) True (b) False
27. 27.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <h1 class="menu"> (c) <h2> (d) <div id="hero">
28. 28.🎯 Which element does the selector p style? (a) <h1> (b) <p class="menu"> (c) <li id="top"> (d) <h2 class="menu">
29. 29.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .logo (b) h1 (c) .menu (d) #end
30. 30.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .box (b) #main (c) .intro (d) .red
32. 32.True or false: .big is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h2 class="red"> (c) <h1 class="note"> (d) <h1 class="big">
34. 34.🎯 Which element does the selector #main style? (a) <div class="box"> (b) <li id="logo"> (c) <li class="main"> (d) <li id="main">
35. 35.True or false: #end is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #logo (b) p (c) .red (d) #end
37. 37.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="red"> (c) <div id="top"> (d) <h1 class="red">
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) h2 (c) .red (d) #big
39. 39.True or false: li is a class selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) #box (b) .star (c) div (d) li

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