CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 259 · 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: .note is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <p class="star" id="end">Hello</p> (a) #end (b) #star (c) .end (d) #hero
4. 4.🎯 Which CSS selector matches this element?
   <div class="red" id="intro">Hello</div> (a) .box (b) #main (c) #intro (d) #red
5. 5.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
7. 7.🎯 Which CSS selector matches this element?
   <p class="star" id="end">Hello</p> (a) .end (b) .star (c) #star (d) .menu
8. 8.True or false: .note is a class selector. (a) False (b) True
9. 9.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which element does the selector #intro style? (a) <p class="box"> (b) <span id="intro"> (c) <span id="main"> (d) <span class="intro">
11. 11.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <h1> (c) <li id="top"> (d) <p class="red">
12. 12.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <span class="box"> (c) <span class="star"> (d) <p class="menu">
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .big (b) .intro (c) .red (d) #main
14. 14.True or false: #main is a class selector. (a) True (b) False
15. 15.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <li class="star"> (c) <div id="hero"> (d) <h2>
16. 16.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) #box (b) span (c) #hero (d) .hero
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #logo (b) .menu (c) .star (d) #star
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .red (b) .intro (c) #red (d) p
19. 19.True or false: .star is a class selector. (a) True (b) False
20. 20.True or false: .big is a class selector. (a) True (b) False
21. 21.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <h1 class="note"> (d) <li class="note">
22. 22.True or false: #hero is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector p style? (a) <p class="big"> (b) <li id="intro"> (c) <h1> (d) <h2 class="big">
24. 24.True or false: #main is an id selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .star (b) h2 (c) #box (d) .end
26. 26.🎯 Which element does the selector li style? (a) <div> (b) <p id="intro"> (c) <span class="menu"> (d) <li class="menu">
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) .top (b) #intro (c) li (d) div
28. 28.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p class="star">
29. 29.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <span class="menu"> (c) <h1 class="menu"> (d) <p>
30. 30.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #big (b) div (c) .intro (d) .big
31. 31.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
32. 32.True or false: .menu is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) p (b) #red (c) .red (d) .end
34. 34.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which element does the selector p style? (a) <h1> (b) <li id="intro"> (c) <p class="note"> (d) <h2 class="note">
36. 36.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #logo (b) .logo (c) .big (d) #note
38. 38.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="red"> (c) <span class="red"> (d) <h2 id="logo">
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) #intro (c) h1 (d) #top
40. 40.🎯 Can many elements share the same class? (a) Yes (b) No

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